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gtk/gsk/gpu/gskgpunodeprocessor.c
Benjamin Otte 3080e2974d gpu: ceil() offscreen size before generating offscreen 
The goal is to generate an offscreen at 1x scale.
When not ceil()ing the numbers the offscreen code would do it *and*
adjust the scale accordingly, so we'd end up with something like a
1.01x scale.

And that would cause the code to reenter this codepath with the goal to
generate an offscreen at 1x scale.
And indeed, this would lead to infinite recursion.

Tests included.

Fixes #6553
2024-04-09 17:39:32 +02:00

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#include "config.h"
#include "gskgpunodeprocessorprivate.h"
#include "gskgpuborderopprivate.h"
#include "gskgpuboxshadowopprivate.h"
#include "gskgpublendmodeopprivate.h"
#include "gskgpublendopprivate.h"
#include "gskgpublitopprivate.h"
#include "gskgpubluropprivate.h"
#include "gskgpuclearopprivate.h"
#include "gskgpuclipprivate.h"
#include "gskgpucolorizeopprivate.h"
#include "gskgpucolormatrixopprivate.h"
#include "gskgpucoloropprivate.h"
#include "gskgpuconicgradientopprivate.h"
#include "gskgpucrossfadeopprivate.h"
#include "gskgpudescriptorsprivate.h"
#include "gskgpudeviceprivate.h"
#include "gskgpuframeprivate.h"
#include "gskgpuglobalsopprivate.h"
#include "gskgpuimageprivate.h"
#include "gskgpulineargradientopprivate.h"
#include "gskgpumaskopprivate.h"
#include "gskgpumipmapopprivate.h"
#include "gskgpuradialgradientopprivate.h"
#include "gskgpurenderpassopprivate.h"
#include "gskgpuroundedcoloropprivate.h"
#include "gskgpuscissoropprivate.h"
#include "gskgpustraightalphaopprivate.h"
#include "gskgputextureopprivate.h"
#include "gskgpuuberopprivate.h"
#include "gskgpuuploadopprivate.h"
#include "gskcairoblurprivate.h"
#include "gskdebugprivate.h"
#include "gskpath.h"
#include "gskrectprivate.h"
#include "gskrendernodeprivate.h"
#include "gskroundedrectprivate.h"
#include "gskstrokeprivate.h"
#include "gsktransformprivate.h"
#include "gskprivate.h"
#include "gdk/gdkrgbaprivate.h"
#include "gdk/gdksubsurfaceprivate.h"
/* the epsilon we allow pixels to be off due to rounding errors.
* Chosen rather randomly.
*/
#define EPSILON 0.001
/* A note about coordinate systems
*
* The rendering code keeps track of multiple coordinate systems to optimize rendering as
* much as possible and in the coordinate system it makes most sense in.
* Sometimes there are cases where GL requires a certain coordinate system, too.
*
* 1. the node coordinate system
* This is the coordinate system of the rendernode. It is basically not used outside of
* looking at the node and basically never hits the GPU (it does for paths). We immediately
* convert it to:
*
* 2. the basic coordinate system
* convert on CPU: NodeProcessor.offset
* convert on GPU: ---
* This is the coordinate system we emit vertex state in, the clip is tracked here.
* The main benefit is that most transform nodes only change the offset, so we can avoid
* updating any state in this coordinate system when that happens.
*
* 3. the scaled coordinate system
* converts on CPU: NodeProcessor.scale
* converts on GPU: GSK_GLOBAL_SCALE
* This includes the current scale of the transform. It is usually equal to the scale factor
* of the window we are rendering to (which is bad because devs without hidpi screens can
* forget this and then everyone else will see bugs). We make decisions about pixel sizes in
* this coordinate system, like picking glyphs from the glyph cache or the sizes of offscreens
* for offscreen rendering.
*
* 4. the device coordinate system
* converts on CPU: NodeProcessor.modelview
* converts on GPU: ---
* The scissor rect is tracked in this coordinate system. It represents the actual device pixels.
* A bunch of optimizations (like glScissor() and glClear()) can be done here, so in the case
* that modelview == NULL and we end up with integer coordinates (because pixels), we try to go
* here.
* This coordinate system does not exist on shaders as they rarely reason about pixels, and if
* they need to, they can ask the fragment shader via gl_FragCoord.
*
* 5. the GL coordinate system
* converts on CPU: NodeProcessor.projection
* converts on GPU: GSK_GLOBAL_MVP (from scaled coordinate system)
* This coordinate system is what GL (or Vulkan) expect coordinates to appear in, and is usually
* (-1, -1) => (1, 1), but may be flipped etc depending on the render target. The CPU essentially
* never uses it, other than to allow the vertex shaders to emit its vertices.
*/
typedef struct _GskGpuNodeProcessor GskGpuNodeProcessor;
typedef struct _GskGpuPatternWriter GskGpuPatternWriter;
typedef enum {
GSK_GPU_GLOBAL_MATRIX = (1 << 0),
GSK_GPU_GLOBAL_SCALE = (1 << 1),
GSK_GPU_GLOBAL_CLIP = (1 << 2),
GSK_GPU_GLOBAL_SCISSOR = (1 << 3),
GSK_GPU_GLOBAL_BLEND = (1 << 4),
} GskGpuGlobals;
struct _GskGpuNodeProcessor
{
GskGpuFrame *frame;
GskGpuDescriptors *desc;
cairo_rectangle_int_t scissor;
GskGpuBlend blend;
graphene_point_t offset;
graphene_matrix_t projection;
graphene_vec2_t scale;
GskTransform *modelview;
GskGpuClip clip;
float opacity;
GskGpuGlobals pending_globals;
};
#define GDK_ARRAY_NAME pattern_buffer
#define GDK_ARRAY_TYPE_NAME PatternBuffer
#define GDK_ARRAY_ELEMENT_TYPE guchar
#define GDK_ARRAY_BY_VALUE 1
#define GDK_ARRAY_PREALLOC 2048
#define GDK_ARRAY_NO_MEMSET 1
#include "gdk/gdkarrayimpl.c"
struct _GskGpuPatternWriter
{
GskGpuFrame *frame;
GskGpuDescriptors *desc;
graphene_rect_t bounds;
graphene_point_t offset;
graphene_vec2_t scale;
guint stack;
PatternBuffer buffer;
};
static void gsk_gpu_node_processor_add_node (GskGpuNodeProcessor *self,
GskRenderNode *node);
static gboolean gsk_gpu_node_processor_create_node_pattern (GskGpuPatternWriter *self,
GskRenderNode *node);
static void
gsk_gpu_node_processor_finish (GskGpuNodeProcessor *self)
{
g_clear_pointer (&self->modelview, gsk_transform_unref);
g_clear_object (&self->desc);
}
static void
gsk_gpu_node_processor_init (GskGpuNodeProcessor *self,
GskGpuFrame *frame,
GskGpuDescriptors *desc,
GskGpuImage *target,
const cairo_rectangle_int_t *clip,
const graphene_rect_t *viewport)
{
gsize width, height;
width = gsk_gpu_image_get_width (target);
height = gsk_gpu_image_get_height (target);
self->frame = frame;
if (desc)
self->desc = g_object_ref (desc);
else
self->desc = NULL;
self->scissor = *clip;
self->blend = GSK_GPU_BLEND_OVER;
if (clip->x == 0 && clip->y == 0 && clip->width == width && clip->height == height)
{
gsk_gpu_clip_init_empty (&self->clip, &GRAPHENE_RECT_INIT (0, 0, viewport->size.width, viewport->size.height));
}
else
{
float scale_x = viewport->size.width / width;
float scale_y = viewport->size.height / height;
gsk_gpu_clip_init_empty (&self->clip,
&GRAPHENE_RECT_INIT (
scale_x * clip->x,
scale_y * clip->y,
scale_x * clip->width,
scale_y * clip->height
));
}
self->modelview = NULL;
gsk_gpu_image_get_projection_matrix (target, &self->projection);
graphene_vec2_init (&self->scale,
width / viewport->size.width,
height / viewport->size.height);
self->offset = GRAPHENE_POINT_INIT (-viewport->origin.x,
-viewport->origin.y);
self->opacity = 1.0;
self->pending_globals = GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP | GSK_GPU_GLOBAL_SCISSOR | GSK_GPU_GLOBAL_BLEND;
}
static void
gsk_gpu_node_processor_emit_globals_op (GskGpuNodeProcessor *self)
{
graphene_matrix_t mvp;
if (self->modelview)
{
gsk_transform_to_matrix (self->modelview, &mvp);
graphene_matrix_multiply (&mvp, &self->projection, &mvp);
}
else
graphene_matrix_init_from_matrix (&mvp, &self->projection);
gsk_gpu_globals_op (self->frame,
&self->scale,
&mvp,
&self->clip.rect);
self->pending_globals &= ~(GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP);
}
static void
gsk_gpu_node_processor_emit_scissor_op (GskGpuNodeProcessor *self)
{
gsk_gpu_scissor_op (self->frame,
&self->scissor);
self->pending_globals &= ~GSK_GPU_GLOBAL_SCISSOR;
}
static void
gsk_gpu_node_processor_emit_blend_op (GskGpuNodeProcessor *self)
{
gsk_gpu_blend_op (self->frame, self->blend);
self->pending_globals &= ~GSK_GPU_GLOBAL_BLEND;
}
static void
gsk_gpu_node_processor_sync_globals (GskGpuNodeProcessor *self,
GskGpuGlobals ignored)
{
GskGpuGlobals required;
required = self->pending_globals & ~ignored;
if (required & (GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP))
gsk_gpu_node_processor_emit_globals_op (self);
if (required & GSK_GPU_GLOBAL_SCISSOR)
gsk_gpu_node_processor_emit_scissor_op (self);
if (required & GSK_GPU_GLOBAL_BLEND)
gsk_gpu_node_processor_emit_blend_op (self);
}
static guint32
gsk_gpu_node_processor_add_image (GskGpuNodeProcessor *self,
GskGpuImage *image,
GskGpuSampler sampler)
{
guint32 descriptor;
if (self->desc != NULL)
{
if (gsk_gpu_descriptors_add_image (self->desc, image, sampler, &descriptor))
return descriptor;
g_object_unref (self->desc);
}
self->desc = gsk_gpu_frame_create_descriptors (self->frame);
if (!gsk_gpu_descriptors_add_image (self->desc, image, sampler, &descriptor))
{
g_assert_not_reached ();
return 0;
}
return descriptor;
}
static void
gsk_gpu_node_processor_add_images (GskGpuNodeProcessor *self,
gsize n_images,
GskGpuImage **images,
GskGpuSampler *samplers,
guint32 *out_descriptors)
{
GskGpuDescriptors *desc;
gsize i;
g_assert (n_images > 0);
/* note: This will infloop if more images are requested than can fit into an empty descriptors,
* so don't do that. */
do
{
out_descriptors[0] = gsk_gpu_node_processor_add_image (self, images[0], samplers[0]);
desc = self->desc;
for (i = 1; i < n_images; i++)
{
out_descriptors[i] = gsk_gpu_node_processor_add_image (self, images[i], samplers[i]);
if (desc != self->desc)
break;
}
}
while (desc != self->desc);
}
static void
rect_round_to_pixels (const graphene_rect_t *src,
const graphene_vec2_t *pixel_scale,
const graphene_point_t *pixel_offset,
graphene_rect_t *dest)
{
float x, y, xscale, yscale, inv_xscale, inv_yscale;
xscale = graphene_vec2_get_x (pixel_scale);
yscale = graphene_vec2_get_y (pixel_scale);
inv_xscale = 1.0f / xscale;
inv_yscale = 1.0f / yscale;
x = floorf ((src->origin.x + pixel_offset->x) * xscale);
y = floorf ((src->origin.y + pixel_offset->y) * yscale);
*dest = GRAPHENE_RECT_INIT (
x * inv_xscale - pixel_offset->x,
y * inv_yscale - pixel_offset->y,
(ceilf ((src->origin.x + pixel_offset->x + src->size.width) * xscale) - x) * inv_xscale,
(ceilf ((src->origin.y + pixel_offset->y + src->size.height) * yscale) - y) * inv_yscale);
}
static GskGpuImage *
gsk_gpu_node_processor_init_draw (GskGpuNodeProcessor *self,
GskGpuFrame *frame,
GdkMemoryDepth depth,
const graphene_vec2_t *scale,
const graphene_rect_t *viewport)
{
GskGpuImage *image;
cairo_rectangle_int_t area;
area.x = 0;
area.y = 0;
area.width = ceilf (graphene_vec2_get_x (scale) * viewport->size.width - EPSILON);
area.height = ceilf (graphene_vec2_get_y (scale) * viewport->size.height - EPSILON);
image = gsk_gpu_device_create_offscreen_image (gsk_gpu_frame_get_device (frame),
FALSE,
depth,
area.width, area.height);
if (image == NULL)
return NULL;
gsk_gpu_node_processor_init (self,
frame,
NULL,
image,
&area,
viewport);
gsk_gpu_render_pass_begin_op (frame,
image,
&area,
GSK_RENDER_PASS_OFFSCREEN);
return image;
}
static void
gsk_gpu_node_processor_finish_draw (GskGpuNodeProcessor *self,
GskGpuImage *image)
{
gsk_gpu_render_pass_end_op (self->frame,
image,
GSK_RENDER_PASS_OFFSCREEN);
gsk_gpu_node_processor_finish (self);
}
void
gsk_gpu_node_processor_process (GskGpuFrame *frame,
GskGpuImage *target,
const cairo_rectangle_int_t *clip,
GskRenderNode *node,
const graphene_rect_t *viewport)
{
GskGpuNodeProcessor self;
gsk_gpu_node_processor_init (&self,
frame,
NULL,
target,
clip,
viewport);
gsk_gpu_node_processor_add_node (&self, node);
gsk_gpu_node_processor_finish (&self);
}
static void
gsk_gpu_pattern_writer_init (GskGpuPatternWriter *self,
GskGpuFrame *frame,
const graphene_vec2_t *scale,
const graphene_point_t *offset,
const graphene_rect_t *bounds)
{
self->frame = frame;
self->desc = NULL;
self->bounds = GRAPHENE_RECT_INIT (bounds->origin.x + offset->x,
bounds->origin.y + offset->y,
bounds->size.width,
bounds->size.height);
self->offset = *offset;
self->scale = *scale;
self->stack = 0;
pattern_buffer_init (&self->buffer);
}
static inline gsize
round_up (gsize number, gsize divisor)
{
return (number + divisor - 1) / divisor * divisor;
}
static void
gsk_gpu_pattern_writer_append (GskGpuPatternWriter *self,
gsize align,
const guchar *data,
gsize size)
{
pattern_buffer_set_size (&self->buffer, round_up (pattern_buffer_get_size (&self->buffer), align));
pattern_buffer_splice (&self->buffer,
pattern_buffer_get_size (&self->buffer),
0,
FALSE,
data,
size);
}
static void
gsk_gpu_pattern_writer_append_float (GskGpuPatternWriter *self,
float f)
{
gsk_gpu_pattern_writer_append (self, G_ALIGNOF (float), (guchar *) &f, sizeof (float));
}
static void
gsk_gpu_pattern_writer_append_uint (GskGpuPatternWriter *self,
guint32 u)
{
gsk_gpu_pattern_writer_append (self, G_ALIGNOF (guint32), (guchar *) &u, sizeof (guint32));
}
static void
gsk_gpu_pattern_writer_append_matrix (GskGpuPatternWriter *self,
const graphene_matrix_t *matrix)
{
float f[16];
graphene_matrix_to_float (matrix, f);
gsk_gpu_pattern_writer_append (self, G_ALIGNOF (float), (guchar *) f, sizeof (f));
}
static void
gsk_gpu_pattern_writer_append_vec4 (GskGpuPatternWriter *self,
const graphene_vec4_t *vec4)
{
float f[4];
graphene_vec4_to_float (vec4, f);
gsk_gpu_pattern_writer_append (self, G_ALIGNOF (float), (guchar *) f, sizeof (f));
}
static void
gsk_gpu_pattern_writer_append_point (GskGpuPatternWriter *self,
const graphene_point_t *point,
const graphene_point_t *offset)
{
float f[2];
f[0] = point->x + offset->x;
f[1] = point->y + offset->y;
gsk_gpu_pattern_writer_append (self, G_ALIGNOF (float), (guchar *) f, sizeof (f));
}
static void
gsk_gpu_pattern_writer_append_rect (GskGpuPatternWriter *self,
const graphene_rect_t *rect,
const graphene_point_t *offset)
{
float f[4];
gsk_gpu_rect_to_float (rect, offset, f);
gsk_gpu_pattern_writer_append (self, G_ALIGNOF (float), (guchar *) f, sizeof (f));
}
static void
gsk_gpu_pattern_writer_append_rgba (GskGpuPatternWriter *self,
const GdkRGBA *rgba)
{
float f[4] = { rgba->red, rgba->green, rgba->blue, rgba->alpha };
gsk_gpu_pattern_writer_append (self, G_ALIGNOF (float), (guchar *) f, sizeof (f));
}
static void
gsk_gpu_pattern_writer_append_color_stops (GskGpuPatternWriter *self,
const GskColorStop *stops,
gsize n_stops)
{
gsk_gpu_pattern_writer_append_uint (self, n_stops);
gsk_gpu_pattern_writer_append (self, G_ALIGNOF (float), (guchar *) stops, sizeof (GskColorStop) * n_stops);
}
static gboolean
gsk_gpu_pattern_writer_push_stack (GskGpuPatternWriter *self)
{
if (self->stack >= GSK_GPU_PATTERN_STACK_SIZE)
return FALSE;
self->stack++;
return TRUE;
}
static void
gsk_gpu_pattern_writer_pop_stack (GskGpuPatternWriter *self)
{
g_assert (self->stack > 0);
self->stack--;
}
static void
gsk_gpu_pattern_writer_finish (GskGpuPatternWriter *self)
{
pattern_buffer_clear (&self->buffer);
g_assert (self->stack == 0);
g_clear_object (&self->desc);
}
static gboolean
gsk_gpu_pattern_writer_add_image (GskGpuPatternWriter *self,
GskGpuImage *image,
GskGpuSampler sampler,
guint32 *out_descriptor)
{
if (self->desc == NULL)
self->desc = gsk_gpu_frame_create_descriptors (self->frame);
return gsk_gpu_descriptors_add_image (self->desc, image, sampler, out_descriptor);
}
static void
extract_scale_from_transform (GskTransform *transform,
float *out_scale_x,
float *out_scale_y)
{
switch (gsk_transform_get_category (transform))
{
default:
g_assert_not_reached ();
case GSK_TRANSFORM_CATEGORY_IDENTITY:
case GSK_TRANSFORM_CATEGORY_2D_TRANSLATE:
*out_scale_x = 1.0f;
*out_scale_y = 1.0f;
return;
case GSK_TRANSFORM_CATEGORY_2D_AFFINE:
{
float scale_x, scale_y, dx, dy;
gsk_transform_to_affine (transform, &scale_x, &scale_y, &dx, &dy);
*out_scale_x = fabs (scale_x);
*out_scale_y = fabs (scale_y);
}
return;
case GSK_TRANSFORM_CATEGORY_2D:
{
float skew_x, skew_y, scale_x, scale_y, angle, dx, dy;
gsk_transform_to_2d_components (transform,
&skew_x, &skew_y,
&scale_x, &scale_y,
&angle,
&dx, &dy);
*out_scale_x = fabs (scale_x);
*out_scale_y = fabs (scale_y);
}
return;
case GSK_TRANSFORM_CATEGORY_UNKNOWN:
case GSK_TRANSFORM_CATEGORY_ANY:
case GSK_TRANSFORM_CATEGORY_3D:
{
graphene_quaternion_t rotation;
graphene_matrix_t matrix;
graphene_vec4_t perspective;
graphene_vec3_t translation;
graphene_vec3_t matrix_scale;
graphene_vec3_t shear;
gsk_transform_to_matrix (transform, &matrix);
graphene_matrix_decompose (&matrix,
&translation,
&matrix_scale,
&rotation,
&shear,
&perspective);
*out_scale_x = fabs (graphene_vec3_get_x (&matrix_scale));
*out_scale_y = fabs (graphene_vec3_get_y (&matrix_scale));
}
return;
}
}
static gboolean
gsk_gpu_node_processor_rect_is_integer (GskGpuNodeProcessor *self,
const graphene_rect_t *rect,
cairo_rectangle_int_t *int_rect)
{
graphene_rect_t transformed_rect;
float scale_x = graphene_vec2_get_x (&self->scale);
float scale_y = graphene_vec2_get_y (&self->scale);
switch (gsk_transform_get_category (self->modelview))
{
case GSK_TRANSFORM_CATEGORY_UNKNOWN:
case GSK_TRANSFORM_CATEGORY_ANY:
case GSK_TRANSFORM_CATEGORY_3D:
case GSK_TRANSFORM_CATEGORY_2D:
/* FIXME: We could try to handle 90° rotation here,
* but I don't think there's a use case */
return FALSE;
case GSK_TRANSFORM_CATEGORY_2D_AFFINE:
case GSK_TRANSFORM_CATEGORY_2D_TRANSLATE:
gsk_transform_transform_bounds (self->modelview, rect, &transformed_rect);
rect = &transformed_rect;
break;
case GSK_TRANSFORM_CATEGORY_IDENTITY:
default:
break;
}
int_rect->x = rect->origin.x * scale_x;
int_rect->y = rect->origin.y * scale_y;
int_rect->width = rect->size.width * scale_x;
int_rect->height = rect->size.height * scale_y;
return int_rect->x == rect->origin.x * scale_x
&& int_rect->y == rect->origin.y * scale_y
&& int_rect->width == rect->size.width * scale_x
&& int_rect->height == rect->size.height * scale_y;
}
static void
gsk_gpu_node_processor_get_clip_bounds (GskGpuNodeProcessor *self,
graphene_rect_t *out_bounds)
{
graphene_rect_offset_r (&self->clip.rect.bounds,
- self->offset.x,
- self->offset.y,
out_bounds);
/* FIXME: We could try the scissor rect here.
* But how often is that smaller than the clip bounds?
*/
}
static gboolean G_GNUC_WARN_UNUSED_RESULT
gsk_gpu_node_processor_clip_node_bounds (GskGpuNodeProcessor *self,
GskRenderNode *node,
graphene_rect_t *out_bounds)
{
graphene_rect_t tmp;
gsk_gpu_node_processor_get_clip_bounds (self, &tmp);
if (!gsk_rect_intersection (&tmp, &node->bounds, out_bounds))
return FALSE;
return TRUE;
}
static void
gsk_gpu_node_processor_image_op (GskGpuNodeProcessor *self,
GskGpuImage *image,
const graphene_rect_t *rect,
const graphene_rect_t *tex_rect)
{
guint32 descriptor;
g_assert (self->pending_globals == 0);
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_DEFAULT);
if (gsk_gpu_image_get_flags (image) & GSK_GPU_IMAGE_STRAIGHT_ALPHA)
{
gsk_gpu_straight_alpha_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, rect),
self->opacity,
self->desc,
descriptor,
rect,
&self->offset,
tex_rect);
}
else if (self->opacity < 1.0)
{
gsk_gpu_color_matrix_op_opacity (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, rect),
self->desc,
descriptor,
rect,
&self->offset,
tex_rect,
self->opacity);
}
else
{
gsk_gpu_texture_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, rect),
self->desc,
descriptor,
rect,
&self->offset,
tex_rect);
}
}
static GskGpuImage *
gsk_gpu_node_processor_create_offscreen (GskGpuFrame *frame,
const graphene_vec2_t *scale,
const graphene_rect_t *viewport,
GskRenderNode *node)
{
GskGpuNodeProcessor self;
GskGpuImage *image;
image = gsk_gpu_node_processor_init_draw (&self,
frame,
gsk_render_node_get_preferred_depth (node),
scale,
viewport);
if (image == NULL)
return NULL;
gsk_gpu_node_processor_add_node (&self, node);
gsk_gpu_node_processor_finish_draw (&self, image);
return image;
}
/*
* gsk_gpu_get_node_as_image:
* @frame: frame to render in
* @clip_bounds: region of node that must be included in image
* @scale: scale factor to use for the image
* @node: the node to render
* @out_bounds: the actual bounds of the result
*
* Get the part of the node indicated by the clip bounds as an image.
*
* It is perfectly valid for this function to return an image covering
* a larger or smaller rectangle than the given clip bounds.
* It can be smaller if the node is actually smaller than the clip
* bounds and it's not necessary to create such a large offscreen, and
* it can be larger if only part of a node is drawn but a cached image
* for the full node (usually a texture node) already exists.
*
* The rectangle that is actually covered by the image is returned in
* out_bounds.
*
* Returns: the image or %NULL if there was nothing to render
**/
static GskGpuImage *
gsk_gpu_get_node_as_image (GskGpuFrame *frame,
const graphene_rect_t *clip_bounds,
const graphene_vec2_t *scale,
GskRenderNode *node,
graphene_rect_t *out_bounds)
{
GskGpuImage *result;
switch ((guint) gsk_render_node_get_node_type (node))
{
case GSK_TEXTURE_NODE:
{
GdkTexture *texture = gsk_texture_node_get_texture (node);
GskGpuDevice *device = gsk_gpu_frame_get_device (frame);
gint64 timestamp = gsk_gpu_frame_get_timestamp (frame);
result = gsk_gpu_device_lookup_texture_image (device, texture, timestamp);
if (result == NULL)
result = gsk_gpu_frame_upload_texture (frame, FALSE, texture);
if (result)
{
*out_bounds = node->bounds;
return result;
}
break;
}
case GSK_CAIRO_NODE:
result = gsk_gpu_upload_cairo_op (frame,
scale,
clip_bounds,
(GskGpuCairoFunc) gsk_render_node_draw_fallback,
gsk_render_node_ref (node),
(GDestroyNotify) gsk_render_node_unref);
g_object_ref (result);
*out_bounds = *clip_bounds;
return result;
default:
break;
}
GSK_DEBUG (FALLBACK, "Offscreening node '%s'", g_type_name_from_instance ((GTypeInstance *) node));
result = gsk_gpu_node_processor_create_offscreen (frame,
scale,
clip_bounds,
node);
*out_bounds = *clip_bounds;
return result;
}
static GskGpuImage *
gsk_gpu_node_processor_ensure_image (GskGpuFrame *frame,
GskGpuImage *image,
GskGpuImageFlags required_flags,
GskGpuImageFlags disallowed_flags)
{
GskGpuImageFlags flags, missing_flags;
GskGpuImage *copy;
gsize width, height;
g_assert ((required_flags & disallowed_flags) == 0);
g_assert ((required_flags & (GSK_GPU_IMAGE_EXTERNAL | GSK_GPU_IMAGE_STRAIGHT_ALPHA | GSK_GPU_IMAGE_NO_BLIT)) == 0);
flags = gsk_gpu_image_get_flags (image);
missing_flags = required_flags & ~flags;
if ((flags & disallowed_flags) == 0)
{
if (missing_flags == 0)
return image;
if (missing_flags == GSK_GPU_IMAGE_MIPMAP &&
(flags & GSK_GPU_IMAGE_CAN_MIPMAP))
{
gsk_gpu_mipmap_op (frame, image);
return image;
}
}
width = gsk_gpu_image_get_width (image);
height = gsk_gpu_image_get_height (image);
copy = gsk_gpu_device_create_offscreen_image (gsk_gpu_frame_get_device (frame),
required_flags & (GSK_GPU_IMAGE_CAN_MIPMAP | GSK_GPU_IMAGE_MIPMAP) ? TRUE : FALSE,
gdk_memory_format_get_depth (gsk_gpu_image_get_format (image)),
width, height);
if (gsk_gpu_frame_should_optimize (frame, GSK_GPU_OPTIMIZE_BLIT) &&
(flags & (GSK_GPU_IMAGE_NO_BLIT | GSK_GPU_IMAGE_STRAIGHT_ALPHA | GSK_GPU_IMAGE_FILTERABLE)) == GSK_GPU_IMAGE_FILTERABLE)
{
gsk_gpu_blit_op (frame,
image,
copy,
&(cairo_rectangle_int_t) { 0, 0, width, height },
&(cairo_rectangle_int_t) { 0, 0, width, height },
GSK_GPU_BLIT_NEAREST);
}
else
{
GskGpuNodeProcessor other;
graphene_rect_t rect = GRAPHENE_RECT_INIT (0, 0, width, height);
gsk_gpu_node_processor_init (&other,
frame,
NULL,
copy,
&(cairo_rectangle_int_t) { 0, 0, width, height },
&rect);
gsk_gpu_render_pass_begin_op (other.frame,
copy,
&(cairo_rectangle_int_t) { 0, 0, width, height },
GSK_RENDER_PASS_OFFSCREEN);
gsk_gpu_node_processor_sync_globals (&other, 0);
gsk_gpu_node_processor_image_op (&other,
image,
&rect,
&rect);
gsk_gpu_render_pass_end_op (other.frame,
copy,
GSK_RENDER_PASS_OFFSCREEN);
gsk_gpu_node_processor_finish (&other);
}
if (required_flags & GSK_GPU_IMAGE_MIPMAP)
gsk_gpu_mipmap_op (frame, copy);
g_object_unref (image);
return copy;
}
/*
* gsk_gpu_node_processor_get_node_as_image:
* @self: a node processor
* @required_flags: flags that the resulting image must have
* @disallowed_flags: flags that the resulting image must NOT have
* @clip_bounds: (nullable): clip rectangle to use or NULL to use
* the current clip
* @node: the node to turn into an image
* @out_bounds: bounds of the the image in node space
*
* Generates an image for the given node that conforms to the required flags
* and does not contain the disallowed flags. The image is restricted to the
* region in the clip bounds.
*
* Returns: (nullable): The node as an image or %NULL if the node is fully
* clipped
**/
static GskGpuImage *
gsk_gpu_node_processor_get_node_as_image (GskGpuNodeProcessor *self,
GskGpuImageFlags required_flags,
GskGpuImageFlags disallowed_flags,
const graphene_rect_t *clip_bounds,
GskRenderNode *node,
graphene_rect_t *out_bounds)
{
GskGpuImage *image, *ensure;
graphene_rect_t clip;
if (clip_bounds == NULL)
{
if (!gsk_gpu_node_processor_clip_node_bounds (self, node, &clip))
return NULL;
}
else
{
if (!gsk_rect_intersection (clip_bounds, &node->bounds, &clip))
return NULL;
}
rect_round_to_pixels (&clip, &self->scale, &self->offset, &clip);
image = gsk_gpu_get_node_as_image (self->frame,
&clip,
&self->scale,
node,
out_bounds);
if (image == NULL)
return NULL;
ensure = gsk_gpu_node_processor_ensure_image (self->frame,
image,
required_flags,
disallowed_flags);
/* if we fixed up a cached texture, cache the fixed up version instead */
if (ensure != image && disallowed_flags &&
gsk_render_node_get_node_type (node) == GSK_TEXTURE_NODE)
{
gsk_gpu_device_cache_texture_image (gsk_gpu_frame_get_device (self->frame),
gsk_texture_node_get_texture (node),
gsk_gpu_frame_get_timestamp (self->frame),
ensure);
}
return ensure;
}
static void
gsk_gpu_node_processor_blur_op (GskGpuNodeProcessor *self,
const graphene_rect_t *rect,
const graphene_point_t *shadow_offset,
float blur_radius,
const GdkRGBA *shadow_color,
GskGpuDescriptors *source_desc,
guint32 source_descriptor,
GdkMemoryDepth source_depth,
const graphene_rect_t *source_rect)
{
GskGpuNodeProcessor other;
GskGpuImage *intermediate;
guint32 intermediate_descriptor;
graphene_vec2_t direction;
graphene_rect_t clip_rect, intermediate_rect;
graphene_point_t real_offset;
float clip_radius;
clip_radius = gsk_cairo_blur_compute_pixels (blur_radius / 2.0);
/* FIXME: Handle clip radius growing the clip too much */
gsk_gpu_node_processor_get_clip_bounds (self, &clip_rect);
clip_rect.origin.x -= shadow_offset->x;
clip_rect.origin.y -= shadow_offset->y;
graphene_rect_inset (&clip_rect, 0.f, -clip_radius);
if (!gsk_rect_intersection (rect, &clip_rect, &intermediate_rect))
return;
rect_round_to_pixels (&intermediate_rect, &self->scale, &self->offset, &intermediate_rect);
intermediate = gsk_gpu_node_processor_init_draw (&other,
self->frame,
source_depth,
&self->scale,
&intermediate_rect);
gsk_gpu_node_processor_sync_globals (&other, 0);
graphene_vec2_init (&direction, blur_radius, 0.0f);
gsk_gpu_blur_op (other.frame,
gsk_gpu_clip_get_shader_clip (&other.clip, &other.offset, &intermediate_rect),
source_desc,
source_descriptor,
&intermediate_rect,
&other.offset,
source_rect,
&direction);
gsk_gpu_node_processor_finish_draw (&other, intermediate);
real_offset = GRAPHENE_POINT_INIT (self->offset.x + shadow_offset->x,
self->offset.y + shadow_offset->y);
graphene_vec2_init (&direction, 0.0f, blur_radius);
intermediate_descriptor = gsk_gpu_node_processor_add_image (self, intermediate, GSK_GPU_SAMPLER_TRANSPARENT);
if (shadow_color)
{
gsk_gpu_blur_shadow_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &real_offset, rect),
self->desc,
intermediate_descriptor,
rect,
&real_offset,
&intermediate_rect,
&direction,
shadow_color);
}
else
{
gsk_gpu_blur_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &real_offset, rect),
self->desc,
intermediate_descriptor,
rect,
&real_offset,
&intermediate_rect,
&direction);
}
g_object_unref (intermediate);
}
static void
gsk_gpu_node_processor_add_fallback_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskGpuImage *image;
graphene_rect_t clipped_bounds;
if (!gsk_gpu_node_processor_clip_node_bounds (self, node, &clipped_bounds))
return;
rect_round_to_pixels (&clipped_bounds, &self->scale, &self->offset, &clipped_bounds);
gsk_gpu_node_processor_sync_globals (self, 0);
image = gsk_gpu_upload_cairo_op (self->frame,
&self->scale,
&clipped_bounds,
(GskGpuCairoFunc) gsk_render_node_draw_fallback,
gsk_render_node_ref (node),
(GDestroyNotify) gsk_render_node_unref);
gsk_gpu_node_processor_image_op (self,
image,
&node->bounds,
&clipped_bounds);
}
static gboolean
gsk_gpu_node_processor_repeat_node_can_ubershader (GskRenderNode *node)
{
const graphene_rect_t *child_bounds;
child_bounds = gsk_repeat_node_get_child_bounds (node);
if (child_bounds->size.width > node->bounds.size.width ||
child_bounds->size.height > node->bounds.size.height)
return FALSE;
return TRUE;
}
/* To be called when code wants to run a shader which
* would require rendering @node into an offscreen, but it
* could also run an ubershader.
*/
static gboolean
gsk_gpu_node_processor_ubershader_instead_of_offscreen (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
if (!gsk_gpu_frame_should_optimize (self->frame, GSK_GPU_OPTIMIZE_UBER))
return FALSE;
for (;;)
{
switch (gsk_render_node_get_node_type (node))
{
case GSK_TRANSFORM_NODE:
node = gsk_transform_node_get_child (node);
break;
case GSK_CLIP_NODE:
node = gsk_clip_node_get_child (node);
break;
case GSK_OPACITY_NODE:
node = gsk_opacity_node_get_child (node);
break;
case GSK_DEBUG_NODE:
node = gsk_debug_node_get_child (node);
break;
case GSK_SUBSURFACE_NODE:
node = gsk_subsurface_node_get_child (node);
break;
case GSK_REPEAT_NODE:
return gsk_gpu_node_processor_repeat_node_can_ubershader (node);
case GSK_COLOR_NODE:
case GSK_LINEAR_GRADIENT_NODE:
case GSK_REPEATING_LINEAR_GRADIENT_NODE:
case GSK_RADIAL_GRADIENT_NODE:
case GSK_REPEATING_RADIAL_GRADIENT_NODE:
case GSK_CONIC_GRADIENT_NODE:
case GSK_ROUNDED_CLIP_NODE:
case GSK_COLOR_MATRIX_NODE:
case GSK_CROSS_FADE_NODE:
case GSK_BLEND_NODE:
case GSK_TEXT_NODE:
case GSK_MASK_NODE:
return TRUE;
case GSK_CONTAINER_NODE:
case GSK_CAIRO_NODE:
case GSK_BORDER_NODE:
case GSK_TEXTURE_NODE:
case GSK_INSET_SHADOW_NODE:
case GSK_OUTSET_SHADOW_NODE:
case GSK_SHADOW_NODE:
case GSK_BLUR_NODE:
case GSK_GL_SHADER_NODE:
case GSK_TEXTURE_SCALE_NODE:
case GSK_FILL_NODE:
case GSK_STROKE_NODE:
return FALSE;
case GSK_NOT_A_RENDER_NODE:
default:
g_return_val_if_reached (FALSE);
}
}
}
static gboolean
gsk_gpu_node_processor_try_node_as_pattern (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskGpuPatternWriter writer;
graphene_rect_t clipped;
GskGpuBuffer *buffer;
gsize offset;
guint32 pattern_id;
g_assert (self->pending_globals == 0);
if (!gsk_gpu_node_processor_clip_node_bounds (self, node, &clipped))
return TRUE;
gsk_gpu_pattern_writer_init (&writer,
self->frame,
&self->scale,
&self->offset,
&clipped);
if (!gsk_gpu_node_processor_create_node_pattern (&writer, node))
{
gsk_gpu_pattern_writer_finish (&writer);
return FALSE;
}
if (self->opacity < 1.0)
{
gsk_gpu_pattern_writer_append_uint (&writer, GSK_GPU_PATTERN_OPACITY);
gsk_gpu_pattern_writer_append_float (&writer, self->opacity);
}
gsk_gpu_pattern_writer_append_uint (&writer, GSK_GPU_PATTERN_DONE);
buffer = gsk_gpu_frame_write_storage_buffer (self->frame,
pattern_buffer_get_data (&writer.buffer),
pattern_buffer_get_size (&writer.buffer),
&offset);
if (writer.desc == NULL)
{
if (self->desc == NULL)
self->desc = gsk_gpu_frame_create_descriptors (self->frame);
if (!gsk_gpu_descriptors_add_buffer (self->desc, buffer, &pattern_id))
writer.desc = gsk_gpu_frame_create_descriptors (self->frame);
}
if (writer.desc &&
!gsk_gpu_descriptors_add_buffer (writer.desc, buffer, &pattern_id))
{
g_assert_not_reached ();
}
pattern_id = (pattern_id << 22) | (offset / sizeof (float));
gsk_gpu_uber_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
&node->bounds,
&self->offset,
writer.desc ? writer.desc : self->desc,
pattern_id);
gsk_gpu_pattern_writer_finish (&writer);
return TRUE;
}
static void
gsk_gpu_node_processor_add_without_opacity (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskGpuImage *image;
guint32 descriptor;
graphene_rect_t tex_rect;
gsk_gpu_node_processor_sync_globals (self, 0);
if (gsk_gpu_node_processor_ubershader_instead_of_offscreen (self, node) &&
gsk_gpu_node_processor_try_node_as_pattern (self, node))
return;
image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
NULL,
node,
&tex_rect);
if (image == NULL)
return;
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_DEFAULT);
gsk_gpu_color_matrix_op_opacity (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
self->desc,
descriptor,
&node->bounds,
&self->offset,
&tex_rect,
self->opacity);
g_object_unref (image);
}
static void
gsk_gpu_node_processor_add_node_clipped (GskGpuNodeProcessor *self,
GskRenderNode *node,
const graphene_rect_t *clip_bounds)
{
GskGpuClip old_clip;
graphene_rect_t clip;
cairo_rectangle_int_t scissor;
if (gsk_rect_contains_rect (clip_bounds, &node->bounds))
{
gsk_gpu_node_processor_add_node (self, node);
return;
}
graphene_rect_offset_r (clip_bounds,
self->offset.x, self->offset.y,
&clip);
gsk_gpu_clip_init_copy (&old_clip, &self->clip);
/* Check if we can use scissoring for the clip */
if (gsk_gpu_node_processor_rect_is_integer (self, &clip, &scissor))
{
cairo_rectangle_int_t old_scissor;
if (!gdk_rectangle_intersect (&scissor, &self->scissor, &scissor))
return;
old_scissor = self->scissor;
if (gsk_gpu_clip_intersect_rect (&self->clip, &old_clip, &clip))
{
if (self->clip.type == GSK_GPU_CLIP_ALL_CLIPPED)
{
gsk_gpu_clip_init_copy (&self->clip, &old_clip);
return;
}
else if ((self->clip.type == GSK_GPU_CLIP_RECT || self->clip.type == GSK_GPU_CLIP_CONTAINED) &&
gsk_rect_contains_rect (&self->clip.rect.bounds, &clip))
{
self->clip.type = GSK_GPU_CLIP_NONE;
}
self->scissor = scissor;
self->pending_globals |= GSK_GPU_GLOBAL_SCISSOR | GSK_GPU_GLOBAL_CLIP;
gsk_gpu_node_processor_add_node (self, node);
gsk_gpu_clip_init_copy (&self->clip, &old_clip);
self->scissor = old_scissor;
self->pending_globals |= GSK_GPU_GLOBAL_SCISSOR | GSK_GPU_GLOBAL_CLIP;
}
else
{
self->scissor = scissor;
self->pending_globals |= GSK_GPU_GLOBAL_SCISSOR;
gsk_gpu_clip_init_copy (&self->clip, &old_clip);
gsk_gpu_node_processor_add_node (self, node);
self->scissor = old_scissor;
self->pending_globals |= GSK_GPU_GLOBAL_SCISSOR;
}
}
else
{
if (!gsk_gpu_clip_intersect_rect (&self->clip, &old_clip, &clip))
{
gsk_gpu_clip_init_copy (&self->clip, &old_clip);
gsk_gpu_node_processor_sync_globals (self, 0);
if (!gsk_gpu_node_processor_ubershader_instead_of_offscreen (self, node) ||
!gsk_gpu_node_processor_try_node_as_pattern (self, node))
{
GskGpuImage *image;
graphene_rect_t bounds, tex_rect;
if (gsk_gpu_node_processor_clip_node_bounds (self, node, &bounds) &&
gsk_rect_intersection (&bounds, clip_bounds, &bounds))
image = gsk_gpu_node_processor_get_node_as_image (self,
0,
0,
&bounds,
node,
&tex_rect);
else
image = NULL;
if (image)
{
gsk_gpu_node_processor_image_op (self,
image,
&bounds,
&tex_rect);
g_object_unref (image);
}
}
return;
}
if (self->clip.type == GSK_GPU_CLIP_ALL_CLIPPED)
{
gsk_gpu_clip_init_copy (&self->clip, &old_clip);
return;
}
self->pending_globals |= GSK_GPU_GLOBAL_CLIP;
gsk_gpu_node_processor_add_node (self, node);
gsk_gpu_clip_init_copy (&self->clip, &old_clip);
self->pending_globals |= GSK_GPU_GLOBAL_CLIP;
}
}
static void
gsk_gpu_node_processor_add_clip_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
gsk_gpu_node_processor_add_node_clipped (self,
gsk_clip_node_get_child (node),
gsk_clip_node_get_clip (node));
}
static gboolean
gsk_gpu_node_processor_create_clip_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
if (!gsk_gpu_node_processor_create_node_pattern (self, gsk_opacity_node_get_child (node)))
return FALSE;
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_CLIP);
gsk_gpu_pattern_writer_append_rect (self,
gsk_clip_node_get_clip (node),
&self->offset);
return TRUE;
}
static void
gsk_gpu_node_processor_add_rounded_clip_node_with_mask (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskGpuNodeProcessor other;
graphene_rect_t clip_bounds, child_rect;
GskGpuImage *child_image, *mask_image;
guint32 descriptors[2];
if (!gsk_gpu_node_processor_clip_node_bounds (self, node, &clip_bounds))
return;
rect_round_to_pixels (&clip_bounds, &self->scale, &self->offset, &clip_bounds);
child_image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
&clip_bounds,
gsk_rounded_clip_node_get_child (node),
&child_rect);
if (child_image == NULL)
return;
mask_image = gsk_gpu_node_processor_init_draw (&other,
self->frame,
gsk_render_node_get_preferred_depth (node),
&self->scale,
&clip_bounds);
gsk_gpu_node_processor_sync_globals (&other, 0);
gsk_gpu_rounded_color_op (other.frame,
gsk_gpu_clip_get_shader_clip (&other.clip, &other.offset, &node->bounds),
gsk_rounded_clip_node_get_clip (node),
&other.offset,
&GDK_RGBA_WHITE);
gsk_gpu_node_processor_finish_draw (&other, mask_image);
gsk_gpu_node_processor_add_images (self,
2,
(GskGpuImage *[2]) { child_image, mask_image },
(GskGpuSampler[2]) { GSK_GPU_SAMPLER_DEFAULT, GSK_GPU_SAMPLER_DEFAULT },
descriptors);
gsk_gpu_node_processor_sync_globals (self, 0);
gsk_gpu_mask_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &clip_bounds),
self->desc,
&clip_bounds,
&self->offset,
self->opacity,
GSK_MASK_MODE_ALPHA,
descriptors[0],
&child_rect,
descriptors[1],
&clip_bounds);
g_object_unref (child_image);
g_object_unref (mask_image);
}
static void
gsk_gpu_node_processor_add_rounded_clip_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskGpuClip old_clip;
GskRoundedRect clip;
const GskRoundedRect *original_clip;
GskRenderNode *child;
child = gsk_rounded_clip_node_get_child (node);
original_clip = gsk_rounded_clip_node_get_clip (node);
/* Common case for entries etc: rounded solid color background.
* And we have a shader for that */
if (gsk_render_node_get_node_type (child) == GSK_COLOR_NODE &&
gsk_rect_contains_rect (&child->bounds, &original_clip->bounds))
{
const GdkRGBA *rgba = gsk_color_node_get_color (child);
gsk_gpu_node_processor_sync_globals (self, 0);
gsk_gpu_rounded_color_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &original_clip->bounds),
original_clip,
&self->offset,
&GDK_RGBA_INIT_ALPHA (rgba, self->opacity));
return;
}
gsk_gpu_clip_init_copy (&old_clip, &self->clip);
clip = *original_clip;
gsk_rounded_rect_offset (&clip, self->offset.x, self->offset.y);
if (!gsk_gpu_clip_intersect_rounded_rect (&self->clip, &old_clip, &clip))
{
gsk_gpu_clip_init_copy (&self->clip, &old_clip);
gsk_gpu_node_processor_add_rounded_clip_node_with_mask (self, node);
return;
}
if (self->clip.type == GSK_GPU_CLIP_ALL_CLIPPED)
{
gsk_gpu_clip_init_copy (&self->clip, &old_clip);
return;
}
self->pending_globals |= GSK_GPU_GLOBAL_CLIP;
gsk_gpu_node_processor_add_node (self, gsk_rounded_clip_node_get_child (node));
gsk_gpu_clip_init_copy (&self->clip, &old_clip);
self->pending_globals |= GSK_GPU_GLOBAL_CLIP;
}
static void
gsk_gpu_node_processor_add_transform_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskRenderNode *child;
GskTransform *transform;
graphene_point_t old_offset;
graphene_vec2_t old_scale;
GskTransform *old_modelview;
GskGpuClip old_clip;
child = gsk_transform_node_get_child (node);
transform = gsk_transform_node_get_transform (node);
switch (gsk_transform_get_category (transform))
{
case GSK_TRANSFORM_CATEGORY_IDENTITY:
case GSK_TRANSFORM_CATEGORY_2D_TRANSLATE:
{
float dx, dy;
gsk_transform_to_translate (transform, &dx, &dy);
old_offset = self->offset;
self->offset.x += dx;
self->offset.y += dy;
gsk_gpu_node_processor_add_node (self, child);
self->offset = old_offset;
}
return;
case GSK_TRANSFORM_CATEGORY_2D_AFFINE:
{
float dx, dy, scale_x, scale_y;
gsk_gpu_clip_init_copy (&old_clip, &self->clip);
old_offset = self->offset;
old_scale = self->scale;
old_modelview = gsk_transform_ref (self->modelview);
gsk_transform_to_affine (transform, &scale_x, &scale_y, &dx, &dy);
gsk_gpu_clip_scale (&self->clip, &old_clip, scale_x, scale_y);
self->offset.x = (self->offset.x + dx) / scale_x;
self->offset.y = (self->offset.y + dy) / scale_y;
graphene_vec2_init (&self->scale, fabs (scale_x), fabs (scale_y));
graphene_vec2_multiply (&self->scale, &old_scale, &self->scale);
self->modelview = gsk_transform_scale (self->modelview,
scale_x / fabs (scale_x),
scale_y / fabs (scale_y));
}
break;
case GSK_TRANSFORM_CATEGORY_2D:
case GSK_TRANSFORM_CATEGORY_UNKNOWN:
case GSK_TRANSFORM_CATEGORY_ANY:
case GSK_TRANSFORM_CATEGORY_3D:
{
GskTransform *clip_transform;
float scale_x, scale_y, old_pixels, new_pixels;
clip_transform = gsk_transform_transform (gsk_transform_translate (NULL, &self->offset), transform);
gsk_gpu_clip_init_copy (&old_clip, &self->clip);
if (gsk_gpu_clip_contains_rect (&self->clip, &self->offset, &node->bounds))
{
gsk_gpu_clip_init_contained (&self->clip, &child->bounds);
}
else if (old_clip.type == GSK_GPU_CLIP_NONE)
{
GskTransform *inverse;
graphene_rect_t new_bounds;
inverse = gsk_transform_invert (gsk_transform_ref (clip_transform));
gsk_transform_transform_bounds (inverse, &old_clip.rect.bounds, &new_bounds);
gsk_transform_unref (inverse);
gsk_gpu_clip_init_empty (&self->clip, &new_bounds);
}
else if (!gsk_gpu_clip_transform (&self->clip, &old_clip, clip_transform, &child->bounds))
{
GskGpuImage *image;
graphene_rect_t tex_rect;
gsk_transform_unref (clip_transform);
/* This cannot loop because the next time we'll hit the branch above */
gsk_gpu_node_processor_sync_globals (self, 0);
image = gsk_gpu_node_processor_get_node_as_image (self,
0,
0,
NULL,
node,
&tex_rect);
if (image != NULL)
{
gsk_gpu_node_processor_image_op (self,
image,
&node->bounds,
&tex_rect);
g_object_unref (image);
}
return;
}
old_offset = self->offset;
old_scale = self->scale;
old_modelview = gsk_transform_ref (self->modelview);
self->modelview = gsk_transform_scale (self->modelview,
graphene_vec2_get_x (&self->scale),
graphene_vec2_get_y (&self->scale));
self->modelview = gsk_transform_transform (self->modelview, clip_transform);
gsk_transform_unref (clip_transform);
extract_scale_from_transform (self->modelview, &scale_x, &scale_y);
old_pixels = MAX (graphene_vec2_get_x (&old_scale) * old_clip.rect.bounds.size.width,
graphene_vec2_get_y (&old_scale) * old_clip.rect.bounds.size.height);
new_pixels = MAX (scale_x * self->clip.rect.bounds.size.width,
scale_y * self->clip.rect.bounds.size.height);
/* Check that our offscreen doesn't get too big. 1.5 ~ sqrt(2) */
if (new_pixels > 1.5 * old_pixels)
{
float forced_downscale = 2 * old_pixels / new_pixels;
scale_x *= forced_downscale;
scale_y *= forced_downscale;
}
self->modelview = gsk_transform_scale (self->modelview, 1 / scale_x, 1 / scale_y);
graphene_vec2_init (&self->scale, scale_x, scale_y);
self->offset = *graphene_point_zero ();
}
break;
default:
g_assert_not_reached ();
break;
}
self->pending_globals |= GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP;
gsk_gpu_node_processor_add_node (self, child);
self->offset = old_offset;
self->scale = old_scale;
gsk_transform_unref (self->modelview);
self->modelview = old_modelview;
gsk_gpu_clip_init_copy (&self->clip, &old_clip);
self->pending_globals |= GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP;
}
static gboolean
gsk_gpu_node_processor_create_transform_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
GskRenderNode *child;
GskTransform *transform;
graphene_point_t old_offset;
graphene_vec2_t old_scale;
graphene_rect_t old_bounds;
gboolean result;
child = gsk_transform_node_get_child (node);
transform = gsk_transform_node_get_transform (node);
old_offset = self->offset;
old_scale = self->scale;
old_bounds = self->bounds;
switch (gsk_transform_get_category (transform))
{
case GSK_TRANSFORM_CATEGORY_IDENTITY:
return gsk_gpu_node_processor_create_node_pattern (self, child);
case GSK_TRANSFORM_CATEGORY_2D_TRANSLATE:
{
float dx, dy;
gsk_transform_to_translate (transform, &dx, &dy);
self->offset.x += dx;
self->offset.y += dy;
result = gsk_gpu_node_processor_create_node_pattern (self, child);
self->offset = old_offset;
return result;
}
case GSK_TRANSFORM_CATEGORY_2D_AFFINE:
{
float sx, sy, dx, dy, inv_sx, inv_sy;
graphene_vec4_t vec4;
if (!gsk_gpu_pattern_writer_push_stack (self))
return FALSE;
gsk_transform_to_affine (transform, &sx, &sy, &dx, &dy);
inv_sx = 1.f / sx;
inv_sy = 1.f / sy;
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_AFFINE);
graphene_vec4_init (&vec4, self->offset.x + dx, self->offset.y + dy, inv_sx, inv_sy);
gsk_gpu_pattern_writer_append_vec4 (self, &vec4);
self->bounds.origin.x = (self->bounds.origin.x - self->offset.x - dx) * inv_sx;
self->bounds.origin.y = (self->bounds.origin.y - self->offset.y - dy) * inv_sy;
self->bounds.size.width *= inv_sx;
self->bounds.size.height *= inv_sy;
self->offset = GRAPHENE_POINT_INIT (0, 0);
graphene_vec2_init (&self->scale, fabs (sx), fabs (sy));
graphene_vec2_multiply (&self->scale, &old_scale, &self->scale);
}
break;
case GSK_TRANSFORM_CATEGORY_2D:
case GSK_TRANSFORM_CATEGORY_UNKNOWN:
case GSK_TRANSFORM_CATEGORY_ANY:
case GSK_TRANSFORM_CATEGORY_3D:
/* could add a mat4 operation here? */
return FALSE;
default:
g_assert_not_reached ();
return FALSE;
}
result = gsk_gpu_node_processor_create_node_pattern (self, child);
if (result)
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_POSITION_POP);
gsk_gpu_pattern_writer_pop_stack (self);
self->scale = old_scale;
self->bounds = old_bounds;
self->offset = old_offset;
return result;
}
static void
gsk_gpu_node_processor_add_opacity_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
float old_opacity = self->opacity;
self->opacity *= gsk_opacity_node_get_opacity (node);
gsk_gpu_node_processor_add_node (self, gsk_opacity_node_get_child (node));
self->opacity = old_opacity;
}
static void
gsk_gpu_node_processor_add_color_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
cairo_rectangle_int_t int_clipped;
graphene_rect_t rect, clipped;
const GdkRGBA *color;
color = gsk_color_node_get_color (node);
graphene_rect_offset_r (&node->bounds,
self->offset.x, self->offset.y,
&rect);
gsk_rect_intersection (&self->clip.rect.bounds, &rect, &clipped);
if (gsk_gpu_frame_should_optimize (self->frame, GSK_GPU_OPTIMIZE_CLEAR) &&
gdk_rgba_is_opaque (color) &&
self->opacity >= 1.0 &&
node->bounds.size.width * node->bounds.size.height > 100 * 100 && /* not worth the effort for small images */
gsk_gpu_node_processor_rect_is_integer (self, &clipped, &int_clipped))
{
/* now handle all the clip */
if (!gdk_rectangle_intersect (&int_clipped, &self->scissor, &int_clipped))
return;
/* we have handled the bounds, now do the corners */
if (self->clip.type == GSK_GPU_CLIP_ROUNDED)
{
graphene_rect_t cover;
GskGpuShaderClip shader_clip;
float scale_x, scale_y;
if (self->modelview)
{
/* Yuck, rounded clip and modelview. I give up. */
gsk_gpu_color_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
&node->bounds,
&self->offset,
gsk_color_node_get_color (node));
return;
}
scale_x = graphene_vec2_get_x (&self->scale);
scale_y = graphene_vec2_get_y (&self->scale);
clipped = GRAPHENE_RECT_INIT (int_clipped.x / scale_x, int_clipped.y / scale_y,
int_clipped.width / scale_x, int_clipped.height / scale_y);
shader_clip = gsk_gpu_clip_get_shader_clip (&self->clip, graphene_point_zero(), &clipped);
if (shader_clip != GSK_GPU_SHADER_CLIP_NONE)
{
gsk_rounded_rect_get_largest_cover (&self->clip.rect, &clipped, &cover);
int_clipped.x = ceilf (cover.origin.x * scale_x);
int_clipped.y = ceilf (cover.origin.y * scale_y);
int_clipped.width = floorf ((cover.origin.x + cover.size.width) * scale_x) - int_clipped.x;
int_clipped.height = floorf ((cover.origin.y + cover.size.height) * scale_y) - int_clipped.y;
if (int_clipped.width == 0 || int_clipped.height == 0)
{
gsk_gpu_color_op (self->frame,
shader_clip,
&clipped,
graphene_point_zero (),
color);
return;
}
cover = GRAPHENE_RECT_INIT (int_clipped.x / scale_x, int_clipped.y / scale_y,
int_clipped.width / scale_x, int_clipped.height / scale_y);
if (clipped.origin.x != cover.origin.x)
gsk_gpu_color_op (self->frame,
shader_clip,
&GRAPHENE_RECT_INIT (clipped.origin.x, clipped.origin.y, cover.origin.x - clipped.origin.x, clipped.size.height),
graphene_point_zero (),
color);
if (clipped.origin.y != cover.origin.y)
gsk_gpu_color_op (self->frame,
shader_clip,
&GRAPHENE_RECT_INIT (clipped.origin.x, clipped.origin.y, clipped.size.width, cover.origin.y - clipped.origin.y),
graphene_point_zero (),
color);
if (clipped.origin.x + clipped.size.width != cover.origin.x + cover.size.width)
gsk_gpu_color_op (self->frame,
shader_clip,
&GRAPHENE_RECT_INIT (cover.origin.x + cover.size.width,
clipped.origin.y,
clipped.origin.x + clipped.size.width - cover.origin.x - cover.size.width,
clipped.size.height),
graphene_point_zero (),
color);
if (clipped.origin.y + clipped.size.height != cover.origin.y + cover.size.height)
gsk_gpu_color_op (self->frame,
shader_clip,
&GRAPHENE_RECT_INIT (clipped.origin.x,
cover.origin.y + cover.size.height,
clipped.size.width,
clipped.origin.y + clipped.size.height - cover.origin.y - cover.size.height),
graphene_point_zero (),
color);
}
}
gsk_gpu_clear_op (self->frame,
&int_clipped,
color);
return;
}
gsk_gpu_color_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
&node->bounds,
&self->offset,
&GDK_RGBA_INIT_ALPHA (color, self->opacity));
}
static gboolean
gsk_gpu_node_processor_create_color_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_COLOR);
gsk_gpu_pattern_writer_append_rgba (self, gsk_color_node_get_color (node));
return TRUE;
}
static void
gsk_gpu_node_processor_add_border_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GdkRGBA colors[4];
gsize i;
memcpy (colors, gsk_border_node_get_colors (node), sizeof (colors));
for (i = 0; i < G_N_ELEMENTS (colors); i++)
colors[i].alpha *= self->opacity;
gsk_gpu_border_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
gsk_border_node_get_outline (node),
&self->offset,
graphene_point_zero (),
gsk_border_node_get_widths (node),
colors);
}
static void
gsk_gpu_node_processor_add_texture_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskGpuDevice *device;
GskGpuImage *image;
GdkTexture *texture;
gint64 timestamp;
device = gsk_gpu_frame_get_device (self->frame);
texture = gsk_texture_node_get_texture (node);
timestamp = gsk_gpu_frame_get_timestamp (self->frame);
image = gsk_gpu_device_lookup_texture_image (device, texture, timestamp);
if (image == NULL)
{
image = gsk_gpu_frame_upload_texture (self->frame, FALSE, texture);
if (image == NULL)
{
GSK_DEBUG (FALLBACK, "Unsupported texture format %u for size %dx%d",
gdk_texture_get_format (texture),
gdk_texture_get_width (texture),
gdk_texture_get_height (texture));
gsk_gpu_node_processor_add_fallback_node (self, node);
return;
}
}
if (gsk_gpu_frame_should_optimize (self->frame, GSK_GPU_OPTIMIZE_MIPMAP) &&
(gdk_texture_get_width (texture) > 2 * node->bounds.size.width * graphene_vec2_get_x (&self->scale) ||
gdk_texture_get_height (texture) > 2 * node->bounds.size.height * graphene_vec2_get_y (&self->scale)))
{
guint32 descriptor;
image = gsk_gpu_node_processor_ensure_image (self->frame,
image,
GSK_GPU_IMAGE_MIPMAP,
GSK_GPU_IMAGE_STRAIGHT_ALPHA);
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_MIPMAP_DEFAULT);
if (self->opacity < 1.0)
{
gsk_gpu_color_matrix_op_opacity (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
self->desc,
descriptor,
&node->bounds,
&self->offset,
&node->bounds,
self->opacity);
}
else
{
gsk_gpu_texture_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
self->desc,
descriptor,
&node->bounds,
&self->offset,
&node->bounds);
}
}
else
{
gsk_gpu_node_processor_image_op (self,
image,
&node->bounds,
&node->bounds);
}
g_object_unref (image);
}
static gboolean
gsk_gpu_node_processor_create_texture_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
GskGpuDevice *device;
GdkTexture *texture;
gint64 timestamp;
guint32 descriptor;
GskGpuImage *image;
GskGpuSampler sampler;
device = gsk_gpu_frame_get_device (self->frame);
texture = gsk_texture_node_get_texture (node);
timestamp = gsk_gpu_frame_get_timestamp (self->frame);
image = gsk_gpu_device_lookup_texture_image (device, texture, timestamp);
if (image == NULL)
{
image = gsk_gpu_frame_upload_texture (self->frame, FALSE, texture);
if (image == NULL)
return FALSE;
}
if (gsk_gpu_frame_should_optimize (self->frame, GSK_GPU_OPTIMIZE_MIPMAP) &&
(gdk_texture_get_width (texture) > 2 * node->bounds.size.width * graphene_vec2_get_x (&self->scale) ||
gdk_texture_get_height (texture) > 2 * node->bounds.size.height * graphene_vec2_get_y (&self->scale)))
{
image = gsk_gpu_node_processor_ensure_image (self->frame,
image,
GSK_GPU_IMAGE_MIPMAP,
GSK_GPU_IMAGE_STRAIGHT_ALPHA);
sampler = GSK_GPU_SAMPLER_MIPMAP_DEFAULT;
}
else
{
sampler = GSK_GPU_SAMPLER_DEFAULT;
}
if (!gsk_gpu_pattern_writer_add_image (self, image, sampler, &descriptor))
{
g_object_unref (image);
return FALSE;
}
if (gsk_gpu_image_get_flags (image) & GSK_GPU_IMAGE_STRAIGHT_ALPHA)
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_STRAIGHT_ALPHA);
else
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_TEXTURE);
gsk_gpu_pattern_writer_append_uint (self, descriptor);
gsk_gpu_pattern_writer_append_rect (self, &node->bounds, &self->offset);
g_object_unref (image);
return TRUE;
}
static void
gsk_gpu_node_processor_add_texture_scale_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskGpuDevice *device;
GskGpuImage *image;
GdkTexture *texture;
GskScalingFilter scaling_filter;
gint64 timestamp;
guint32 descriptor;
gboolean need_mipmap, need_offscreen;
need_offscreen = self->modelview != NULL ||
!graphene_vec2_equal (&self->scale, graphene_vec2_one ());
if (need_offscreen)
{
GskGpuImage *offscreen;
graphene_rect_t clip_bounds;
gsk_gpu_node_processor_get_clip_bounds (self, &clip_bounds);
/* first round to pixel boundaries, so we make sure the full pixels are covered */
rect_round_to_pixels (&clip_bounds, &self->scale, &self->offset, &clip_bounds);
/* then expand by half a pixel so that pixels needed for eventual linear
* filtering are available */
graphene_rect_inset (&clip_bounds, -0.5, -0.5);
/* finally, round to full pixels */
gsk_rect_round_larger (&clip_bounds);
/* now intersect with actual node bounds */
if (!gsk_rect_intersection (&clip_bounds, &node->bounds, &clip_bounds))
return;
clip_bounds.size.width = ceilf (clip_bounds.size.width);
clip_bounds.size.height = ceilf (clip_bounds.size.height);
offscreen = gsk_gpu_node_processor_create_offscreen (self->frame,
graphene_vec2_one (),
&clip_bounds,
node);
descriptor = gsk_gpu_node_processor_add_image (self, offscreen, GSK_GPU_SAMPLER_DEFAULT);
gsk_gpu_texture_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
self->desc,
descriptor,
&node->bounds,
&self->offset,
&clip_bounds);
g_object_unref (offscreen);
return;
}
device = gsk_gpu_frame_get_device (self->frame);
texture = gsk_texture_scale_node_get_texture (node);
scaling_filter = gsk_texture_scale_node_get_filter (node);
timestamp = gsk_gpu_frame_get_timestamp (self->frame);
need_mipmap = scaling_filter == GSK_SCALING_FILTER_TRILINEAR;
image = gsk_gpu_device_lookup_texture_image (device, texture, timestamp);
if (image == NULL)
{
image = gsk_gpu_frame_upload_texture (self->frame, need_mipmap, texture);
if (image == NULL)
{
GSK_DEBUG (FALLBACK, "Unsupported texture format %u for size %dx%d",
gdk_texture_get_format (texture),
gdk_texture_get_width (texture),
gdk_texture_get_height (texture));
gsk_gpu_node_processor_add_fallback_node (self, node);
return;
}
}
image = gsk_gpu_node_processor_ensure_image (self->frame,
image,
need_mipmap ? (GSK_GPU_IMAGE_CAN_MIPMAP | GSK_GPU_IMAGE_MIPMAP) : 0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA);
switch (scaling_filter)
{
case GSK_SCALING_FILTER_LINEAR:
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_DEFAULT);
break;
case GSK_SCALING_FILTER_NEAREST:
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_NEAREST);
break;
case GSK_SCALING_FILTER_TRILINEAR:
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_MIPMAP_DEFAULT);
break;
default:
g_assert_not_reached ();
return;
}
gsk_gpu_texture_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
self->desc,
descriptor,
&node->bounds,
&self->offset,
&node->bounds);
g_object_unref (image);
}
static void
gsk_gpu_node_processor_add_inset_shadow_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GdkRGBA color;
float spread, blur_radius;
spread = gsk_inset_shadow_node_get_spread (node);
color = *gsk_inset_shadow_node_get_color (node);
color.alpha *= self->opacity;
blur_radius = gsk_inset_shadow_node_get_blur_radius (node);
if (blur_radius == 0)
{
gsk_gpu_border_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
gsk_inset_shadow_node_get_outline (node),
&self->offset,
&GRAPHENE_POINT_INIT (gsk_inset_shadow_node_get_dx (node),
gsk_inset_shadow_node_get_dy (node)),
(float[4]) { spread, spread, spread, spread },
(GdkRGBA[4]) { color, color, color, color });
}
else
{
gsk_gpu_box_shadow_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
TRUE,
&node->bounds,
gsk_inset_shadow_node_get_outline (node),
&GRAPHENE_POINT_INIT (gsk_inset_shadow_node_get_dx (node),
gsk_inset_shadow_node_get_dy (node)),
spread,
blur_radius,
&self->offset,
&color);
}
}
static void
gsk_gpu_node_processor_add_outset_shadow_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GdkRGBA color;
float spread, blur_radius, dx, dy;
spread = gsk_outset_shadow_node_get_spread (node);
color = *gsk_outset_shadow_node_get_color (node);
color.alpha *= self->opacity;
blur_radius = gsk_outset_shadow_node_get_blur_radius (node);
dx = gsk_outset_shadow_node_get_dx (node);
dy = gsk_outset_shadow_node_get_dy (node);
if (blur_radius == 0)
{
GskRoundedRect outline;
gsk_rounded_rect_init_copy (&outline, gsk_outset_shadow_node_get_outline (node));
gsk_rounded_rect_shrink (&outline, -spread, -spread, -spread, -spread);
graphene_rect_offset (&outline.bounds, dx, dy);
gsk_gpu_border_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
&outline,
&self->offset,
&GRAPHENE_POINT_INIT (-dx, -dy),
(float[4]) { spread, spread, spread, spread },
(GdkRGBA[4]) { color, color, color, color });
}
else
{
gsk_gpu_box_shadow_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
FALSE,
&node->bounds,
gsk_outset_shadow_node_get_outline (node),
&GRAPHENE_POINT_INIT (dx, dy),
spread,
blur_radius,
&self->offset,
&color);
}
}
typedef void (* GradientOpFunc) (GskGpuNodeProcessor *self,
GskRenderNode *node,
const GskColorStop *stops,
gsize n_stops);
static void
gsk_gpu_node_processor_add_gradient_node (GskGpuNodeProcessor *self,
GskRenderNode *node,
const GskColorStop *stops,
gsize n_stops,
GradientOpFunc func)
{
GskColorStop real_stops[7];
GskGpuNodeProcessor other;
graphene_rect_t bounds;
gsize i, j;
GskGpuImage *image;
guint32 descriptor;
if (n_stops < 8)
{
if (self->opacity < 1.0)
{
for (i = 0; i < n_stops; i++)
{
real_stops[i].offset = stops[i].offset;
real_stops[i].color = GDK_RGBA_INIT_ALPHA (&stops[i].color, self->opacity);
}
stops = real_stops;
}
func (self, node, stops, n_stops);
return;
}
if (gsk_gpu_node_processor_try_node_as_pattern (self, node))
return;
if (!gsk_gpu_node_processor_clip_node_bounds (self, node, &bounds))
return;
rect_round_to_pixels (&bounds, &self->scale, &self->offset, &bounds);
image = gsk_gpu_node_processor_init_draw (&other,
self->frame,
gsk_render_node_get_preferred_depth (node),
&self->scale,
&bounds);
other.blend = GSK_GPU_BLEND_ADD;
other.pending_globals |= GSK_GPU_GLOBAL_BLEND;
gsk_gpu_node_processor_sync_globals (&other, 0);
for (i = 0; i < n_stops; /* happens inside the loop */)
{
if (i == 0)
{
real_stops[0].offset = stops[i].offset;
real_stops[0].color = GDK_RGBA_INIT_ALPHA (&stops[i].color, self->opacity);
i++;
}
else
{
real_stops[0].offset = stops[i-1].offset;
real_stops[0].color = GDK_RGBA_INIT_ALPHA (&stops[i-1].color, 0);
}
for (j = 1; j < 6 && i < n_stops; j++)
{
real_stops[j].offset = stops[i].offset;
real_stops[j].color = GDK_RGBA_INIT_ALPHA (&stops[i].color, self->opacity);
i++;
}
if (i == n_stops - 1)
{
g_assert (j == 6);
real_stops[j].offset = stops[i].offset;
real_stops[j].color = GDK_RGBA_INIT_ALPHA (&stops[i].color, self->opacity);
j++;
i++;
}
else if (i < n_stops)
{
real_stops[j].offset = stops[i].offset;
real_stops[j].color = GDK_RGBA_INIT_ALPHA (&stops[i].color, 0);
j++;
}
func (&other, node, real_stops, j);
}
gsk_gpu_node_processor_finish_draw (&other, image);
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_DEFAULT);
gsk_gpu_texture_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &bounds),
self->desc,
descriptor,
&node->bounds,
&self->offset,
&bounds);
g_object_unref (image);
}
static void
gsk_gpu_node_processor_linear_gradient_op (GskGpuNodeProcessor *self,
GskRenderNode *node,
const GskColorStop *stops,
gsize n_stops)
{
gsk_gpu_linear_gradient_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
GSK_RENDER_NODE_TYPE (node) == GSK_REPEATING_LINEAR_GRADIENT_NODE,
&node->bounds,
gsk_linear_gradient_node_get_start (node),
gsk_linear_gradient_node_get_end (node),
&self->offset,
stops,
n_stops);
}
static void
gsk_gpu_node_processor_add_linear_gradient_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
gsk_gpu_node_processor_add_gradient_node (self,
node,
gsk_linear_gradient_node_get_color_stops (node, NULL),
gsk_linear_gradient_node_get_n_color_stops (node),
gsk_gpu_node_processor_linear_gradient_op);
}
static gboolean
gsk_gpu_node_processor_create_linear_gradient_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
if (gsk_render_node_get_node_type (node) == GSK_REPEATING_LINEAR_GRADIENT_NODE)
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_REPEATING_LINEAR_GRADIENT);
else
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_LINEAR_GRADIENT);
gsk_gpu_pattern_writer_append_point (self,
gsk_linear_gradient_node_get_start (node),
&self->offset);
gsk_gpu_pattern_writer_append_point (self,
gsk_linear_gradient_node_get_end (node),
&self->offset);
gsk_gpu_pattern_writer_append_color_stops (self,
gsk_linear_gradient_node_get_color_stops (node, NULL),
gsk_linear_gradient_node_get_n_color_stops (node));
return TRUE;
}
static void
gsk_gpu_node_processor_radial_gradient_op (GskGpuNodeProcessor *self,
GskRenderNode *node,
const GskColorStop *stops,
gsize n_stops)
{
gsk_gpu_radial_gradient_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
GSK_RENDER_NODE_TYPE (node) == GSK_REPEATING_RADIAL_GRADIENT_NODE,
&node->bounds,
gsk_radial_gradient_node_get_center (node),
&GRAPHENE_POINT_INIT (
gsk_radial_gradient_node_get_hradius (node),
gsk_radial_gradient_node_get_vradius (node)
),
gsk_radial_gradient_node_get_start (node),
gsk_radial_gradient_node_get_end (node),
&self->offset,
stops,
n_stops);
}
static void
gsk_gpu_node_processor_add_radial_gradient_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
gsk_gpu_node_processor_add_gradient_node (self,
node,
gsk_radial_gradient_node_get_color_stops (node, NULL),
gsk_radial_gradient_node_get_n_color_stops (node),
gsk_gpu_node_processor_radial_gradient_op);
}
static gboolean
gsk_gpu_node_processor_create_radial_gradient_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
if (gsk_render_node_get_node_type (node) == GSK_REPEATING_RADIAL_GRADIENT_NODE)
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_REPEATING_RADIAL_GRADIENT);
else
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_RADIAL_GRADIENT);
gsk_gpu_pattern_writer_append_point (self,
gsk_radial_gradient_node_get_center (node),
&self->offset);
gsk_gpu_pattern_writer_append_float (self, gsk_radial_gradient_node_get_hradius (node));
gsk_gpu_pattern_writer_append_float (self, gsk_radial_gradient_node_get_vradius (node));
gsk_gpu_pattern_writer_append_float (self, gsk_radial_gradient_node_get_start (node));
gsk_gpu_pattern_writer_append_float (self, gsk_radial_gradient_node_get_end (node));
gsk_gpu_pattern_writer_append_color_stops (self,
gsk_radial_gradient_node_get_color_stops (node, NULL),
gsk_radial_gradient_node_get_n_color_stops (node));
return TRUE;
}
static void
gsk_gpu_node_processor_conic_gradient_op (GskGpuNodeProcessor *self,
GskRenderNode *node,
const GskColorStop *stops,
gsize n_stops)
{
gsk_gpu_conic_gradient_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
&node->bounds,
gsk_conic_gradient_node_get_center (node),
gsk_conic_gradient_node_get_angle (node),
&self->offset,
stops,
n_stops);
}
static void
gsk_gpu_node_processor_add_conic_gradient_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
gsk_gpu_node_processor_add_gradient_node (self,
node,
gsk_conic_gradient_node_get_color_stops (node, NULL),
gsk_conic_gradient_node_get_n_color_stops (node),
gsk_gpu_node_processor_conic_gradient_op);
}
static gboolean
gsk_gpu_node_processor_create_conic_gradient_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_CONIC_GRADIENT);
gsk_gpu_pattern_writer_append_point (self,
gsk_conic_gradient_node_get_center (node),
&self->offset);
gsk_gpu_pattern_writer_append_float (self, gsk_conic_gradient_node_get_angle (node));
gsk_gpu_pattern_writer_append_color_stops (self,
gsk_conic_gradient_node_get_color_stops (node, NULL),
gsk_conic_gradient_node_get_n_color_stops (node));
return TRUE;
}
static void
gsk_gpu_node_processor_add_blur_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskRenderNode *child;
GskGpuImage *image;
graphene_rect_t tex_rect, clip_rect;
float blur_radius, clip_radius;
guint32 descriptor;
child = gsk_blur_node_get_child (node);
blur_radius = gsk_blur_node_get_radius (node);
if (blur_radius <= 0.f)
{
gsk_gpu_node_processor_add_node (self, child);
return;
}
clip_radius = gsk_cairo_blur_compute_pixels (blur_radius / 2.0);
gsk_gpu_node_processor_get_clip_bounds (self, &clip_rect);
graphene_rect_inset (&clip_rect, -clip_radius, -clip_radius);
image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
&clip_rect,
child,
&tex_rect);
if (image == NULL)
return;
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_TRANSPARENT);
gsk_gpu_node_processor_blur_op (self,
&node->bounds,
graphene_point_zero (),
blur_radius,
NULL,
self->desc,
descriptor,
gdk_memory_format_get_depth (gsk_gpu_image_get_format (image)),
&tex_rect);
g_object_unref (image);
}
static void
gsk_gpu_node_processor_add_shadow_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskGpuImage *image;
graphene_rect_t clip_bounds, tex_rect;
GskRenderNode *child;
gsize i, n_shadows;
GskGpuDescriptors *desc;
guint32 descriptor;
n_shadows = gsk_shadow_node_get_n_shadows (node);
child = gsk_shadow_node_get_child (node);
/* enlarge clip for shadow offsets */
gsk_gpu_node_processor_get_clip_bounds (self, &clip_bounds);
clip_bounds = GRAPHENE_RECT_INIT (clip_bounds.origin.x - node->bounds.size.width + child->bounds.size.width - node->bounds.origin.x + child->bounds.origin.x,
clip_bounds.origin.y - node->bounds.size.height + child->bounds.size.height - node->bounds.origin.y + child->bounds.origin.y,
clip_bounds.size.width + node->bounds.size.width - child->bounds.size.width,
clip_bounds.size.height + node->bounds.size.height - child->bounds.size.height);
image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
&clip_bounds,
child,
&tex_rect);
if (image == NULL)
return;
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_TRANSPARENT);
desc = self->desc;
for (i = 0; i < n_shadows; i++)
{
const GskShadow *shadow = gsk_shadow_node_get_shadow (node, i);
if (shadow->radius == 0)
{
graphene_point_t shadow_offset = GRAPHENE_POINT_INIT (self->offset.x + shadow->dx,
self->offset.y + shadow->dy);
gsk_gpu_colorize_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &shadow_offset, &child->bounds),
desc,
descriptor,
&child->bounds,
&shadow_offset,
&tex_rect,
&shadow->color);
}
else
{
graphene_rect_t bounds;
float clip_radius = gsk_cairo_blur_compute_pixels (0.5 * shadow->radius);
graphene_rect_inset_r (&child->bounds, - clip_radius, - clip_radius, &bounds);
gsk_gpu_node_processor_blur_op (self,
&bounds,
&GRAPHENE_POINT_INIT (shadow->dx, shadow->dy),
shadow->radius,
&shadow->color,
desc,
descriptor,
gdk_memory_format_get_depth (gsk_gpu_image_get_format (image)),
&tex_rect);
}
}
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_DEFAULT);
gsk_gpu_texture_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &child->bounds),
self->desc,
descriptor,
&child->bounds,
&self->offset,
&tex_rect);
g_object_unref (image);
}
static void
gsk_gpu_node_processor_add_blend_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskRenderNode *bottom_child, *top_child;
graphene_rect_t bottom_rect, top_rect;
GskGpuImage *bottom_image, *top_image;
guint32 descriptors[2];
bottom_child = gsk_blend_node_get_bottom_child (node);
top_child = gsk_blend_node_get_top_child (node);
if ((gsk_gpu_node_processor_ubershader_instead_of_offscreen (self, bottom_child) ||
gsk_gpu_node_processor_ubershader_instead_of_offscreen (self, top_child)) &&
gsk_gpu_node_processor_try_node_as_pattern (self, node))
return;
bottom_image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
NULL,
bottom_child,
&bottom_rect);
top_image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
NULL,
top_child,
&top_rect);
if (bottom_image == NULL)
{
if (top_image == NULL)
return;
bottom_image = g_object_ref (top_image);
bottom_rect = *graphene_rect_zero ();
}
else if (top_image == NULL)
{
top_image = g_object_ref (bottom_image);
top_rect = *graphene_rect_zero ();
}
gsk_gpu_node_processor_add_images (self,
2,
(GskGpuImage *[2]) { bottom_image, top_image },
(GskGpuSampler[2]) { GSK_GPU_SAMPLER_DEFAULT, GSK_GPU_SAMPLER_DEFAULT },
descriptors);
gsk_gpu_blend_mode_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
self->desc,
&node->bounds,
&self->offset,
self->opacity,
gsk_blend_node_get_blend_mode (node),
descriptors[0],
&bottom_rect,
descriptors[1],
&top_rect);
g_object_unref (top_image);
g_object_unref (bottom_image);
}
static gboolean
gsk_gpu_node_processor_create_blend_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
GskRenderNode *bottom_child, *top_child;
bottom_child = gsk_blend_node_get_bottom_child (node);
top_child = gsk_blend_node_get_top_child (node);
if (!gsk_gpu_node_processor_create_node_pattern (self, bottom_child))
return FALSE;
if (!gsk_rect_contains_rect (&bottom_child->bounds, &node->bounds))
{
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_CLIP);
gsk_gpu_pattern_writer_append_rect (self, &bottom_child->bounds, &self->offset);
}
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_PUSH_COLOR);
if (!gsk_gpu_pattern_writer_push_stack (self))
return FALSE;
if (!gsk_gpu_node_processor_create_node_pattern (self, top_child))
{
gsk_gpu_pattern_writer_pop_stack (self);
return FALSE;
}
if (!gsk_rect_contains_rect (&top_child->bounds, &node->bounds))
{
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_CLIP);
gsk_gpu_pattern_writer_append_rect (self, &top_child->bounds, &self->offset);
}
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_BLEND_DEFAULT + gsk_blend_node_get_blend_mode (node));
gsk_gpu_pattern_writer_pop_stack (self);
return TRUE;
}
static void
gsk_gpu_node_processor_add_cross_fade_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskRenderNode *start_child, *end_child;
graphene_rect_t start_rect, end_rect;
GskGpuImage *start_image, *end_image;
guint32 descriptors[2];
float progress, old_opacity;
start_child = gsk_cross_fade_node_get_start_child (node);
end_child = gsk_cross_fade_node_get_end_child (node);
progress = gsk_cross_fade_node_get_progress (node);
if ((gsk_gpu_node_processor_ubershader_instead_of_offscreen (self, start_child) ||
gsk_gpu_node_processor_ubershader_instead_of_offscreen (self, end_child)) &&
gsk_gpu_node_processor_try_node_as_pattern (self, node))
return;
start_image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
NULL,
start_child,
&start_rect);
end_image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
NULL,
end_child,
&end_rect);
if (start_image == NULL)
{
if (end_image == NULL)
return;
old_opacity = self->opacity;
self->opacity *= progress;
gsk_gpu_node_processor_image_op (self,
end_image,
&end_child->bounds,
&end_rect);
g_object_unref (end_image);
self->opacity = old_opacity;
return;
}
else if (end_image == NULL)
{
old_opacity = self->opacity;
self->opacity *= (1 - progress);
gsk_gpu_node_processor_image_op (self,
start_image,
&start_child->bounds,
&start_rect);
g_object_unref (start_image);
self->opacity = old_opacity;
return;
}
gsk_gpu_node_processor_add_images (self,
2,
(GskGpuImage *[2]) { start_image, end_image },
(GskGpuSampler[2]) { GSK_GPU_SAMPLER_DEFAULT, GSK_GPU_SAMPLER_DEFAULT },
descriptors);
gsk_gpu_cross_fade_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
self->desc,
&node->bounds,
&self->offset,
self->opacity,
progress,
descriptors[0],
&start_rect,
descriptors[1],
&end_rect);
g_object_unref (end_image);
g_object_unref (start_image);
}
static gboolean
gsk_gpu_node_processor_create_cross_fade_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
GskRenderNode *start_child, *end_child;
start_child = gsk_cross_fade_node_get_start_child (node);
end_child = gsk_cross_fade_node_get_end_child (node);
if (!gsk_gpu_node_processor_create_node_pattern (self, start_child))
return FALSE;
if (!gsk_rect_contains_rect (&start_child->bounds, &node->bounds))
{
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_CLIP);
gsk_gpu_pattern_writer_append_rect (self, &start_child->bounds, &self->offset);
}
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_PUSH_COLOR);
if (!gsk_gpu_pattern_writer_push_stack (self))
return FALSE;
if (!gsk_gpu_node_processor_create_node_pattern (self, end_child))
{
gsk_gpu_pattern_writer_pop_stack (self);
return FALSE;
}
if (!gsk_rect_contains_rect (&end_child->bounds, &node->bounds))
{
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_CLIP);
gsk_gpu_pattern_writer_append_rect (self, &end_child->bounds, &self->offset);
}
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_POP_CROSS_FADE);
gsk_gpu_pattern_writer_append_float (self, gsk_cross_fade_node_get_progress (node));
gsk_gpu_pattern_writer_pop_stack (self);
return TRUE;
}
static void
gsk_gpu_node_processor_add_mask_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskRenderNode *source_child, *mask_child;
GskGpuImage *mask_image;
graphene_rect_t bounds, mask_rect;
GskMaskMode mask_mode;
source_child = gsk_mask_node_get_source (node);
mask_child = gsk_mask_node_get_mask (node);
mask_mode = gsk_mask_node_get_mask_mode (node);
if ((gsk_gpu_node_processor_ubershader_instead_of_offscreen (self, mask_child) ||
(gsk_gpu_node_processor_ubershader_instead_of_offscreen (self, source_child) &&
gsk_render_node_get_node_type (source_child) != GSK_COLOR_NODE)) &&
gsk_gpu_node_processor_try_node_as_pattern (self, node))
return;
if (!gsk_gpu_node_processor_clip_node_bounds (self, node, &bounds))
return;
mask_image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
&bounds,
mask_child,
&mask_rect);
if (mask_image == NULL)
{
if (mask_mode == GSK_MASK_MODE_INVERTED_ALPHA)
gsk_gpu_node_processor_add_node (self, source_child);
return;
}
if (gsk_render_node_get_node_type (source_child) == GSK_COLOR_NODE &&
mask_mode == GSK_MASK_MODE_ALPHA)
{
const GdkRGBA *rgba = gsk_color_node_get_color (source_child);
guint32 descriptor = gsk_gpu_node_processor_add_image (self, mask_image, GSK_GPU_SAMPLER_DEFAULT);
gsk_gpu_colorize_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
self->desc,
descriptor,
&node->bounds,
&self->offset,
&mask_rect,
&GDK_RGBA_INIT_ALPHA (rgba, self->opacity));
}
else
{
GskGpuImage *source_image;
graphene_rect_t source_rect;
guint32 descriptors[2];
source_image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
&bounds,
source_child,
&source_rect);
if (source_image == NULL)
{
g_object_unref (mask_image);
return;
}
gsk_gpu_node_processor_add_images (self,
2,
(GskGpuImage *[2]) { source_image, mask_image },
(GskGpuSampler[2]) { GSK_GPU_SAMPLER_DEFAULT, GSK_GPU_SAMPLER_DEFAULT },
descriptors);
gsk_gpu_mask_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
self->desc,
&node->bounds,
&self->offset,
self->opacity,
mask_mode,
descriptors[0],
&source_rect,
descriptors[1],
&mask_rect);
g_object_unref (source_image);
}
g_object_unref (mask_image);
}
static gboolean
gsk_gpu_node_processor_create_mask_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
GskRenderNode *source_child, *mask_child;
source_child = gsk_mask_node_get_source (node);
mask_child = gsk_mask_node_get_mask (node);
if (!gsk_gpu_node_processor_create_node_pattern (self, source_child))
return FALSE;
if (!gsk_rect_contains_rect (&source_child->bounds, &node->bounds))
{
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_CLIP);
gsk_gpu_pattern_writer_append_rect (self, &source_child->bounds, &self->offset);
}
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_PUSH_COLOR);
if (!gsk_gpu_pattern_writer_push_stack (self))
return FALSE;
if (!gsk_gpu_node_processor_create_node_pattern (self, mask_child))
{
gsk_gpu_pattern_writer_pop_stack (self);
return FALSE;
}
if (!gsk_rect_contains_rect (&mask_child->bounds, &node->bounds))
{
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_CLIP);
gsk_gpu_pattern_writer_append_rect (self, &mask_child->bounds, &self->offset);
}
switch (gsk_mask_node_get_mask_mode (node))
{
case GSK_MASK_MODE_ALPHA:
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_POP_MASK_ALPHA);
break;
case GSK_MASK_MODE_INVERTED_ALPHA:
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_POP_MASK_INVERTED_ALPHA);
break;
case GSK_MASK_MODE_LUMINANCE:
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_POP_MASK_LUMINANCE);
break;
case GSK_MASK_MODE_INVERTED_LUMINANCE:
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_POP_MASK_INVERTED_LUMINANCE);
break;
default:
g_return_val_if_reached (FALSE);
}
gsk_gpu_pattern_writer_pop_stack (self);
return TRUE;
}
static void
gsk_gpu_node_processor_add_glyph_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskGpuDevice *device;
const PangoGlyphInfo *glyphs;
PangoFont *font;
graphene_point_t offset;
guint i, num_glyphs;
float scale, inv_scale;
GdkRGBA color;
float align_scale_x, align_scale_y;
float inv_align_scale_x, inv_align_scale_y;
unsigned int flags_mask;
GskGpuImage *last_image;
guint32 descriptor;
const float inv_pango_scale = 1.f / PANGO_SCALE;
if (self->opacity < 1.0 &&
gsk_text_node_has_color_glyphs (node))
{
gsk_gpu_node_processor_add_without_opacity (self, node);
return;
}
device = gsk_gpu_frame_get_device (self->frame);
color = *gsk_text_node_get_color (node);
color.alpha *= self->opacity;
num_glyphs = gsk_text_node_get_num_glyphs (node);
glyphs = gsk_text_node_get_glyphs (node, NULL);
font = gsk_text_node_get_font (node);
offset = *gsk_text_node_get_offset (node);
offset.x += self->offset.x;
offset.y += self->offset.y;
scale = MAX (graphene_vec2_get_x (&self->scale), graphene_vec2_get_y (&self->scale));
inv_scale = 1.f / scale;
if (gsk_font_get_hint_style (font) != CAIRO_HINT_STYLE_NONE)
{
align_scale_x = scale * 4;
align_scale_y = scale;
flags_mask = 3;
}
else
{
align_scale_x = align_scale_y = scale * 4;
flags_mask = 15;
}
inv_align_scale_x = 1 / align_scale_x;
inv_align_scale_y = 1 / align_scale_y;
last_image = NULL;
descriptor = 0;
for (i = 0; i < num_glyphs; i++)
{
GskGpuImage *image;
graphene_rect_t glyph_bounds, glyph_tex_rect;
graphene_point_t glyph_offset, glyph_origin;
GskGpuGlyphLookupFlags flags;
glyph_origin = GRAPHENE_POINT_INIT (offset.x + glyphs[i].geometry.x_offset * inv_pango_scale,
offset.y + glyphs[i].geometry.y_offset * inv_pango_scale);
glyph_origin.x = floorf (glyph_origin.x * align_scale_x + 0.5f);
glyph_origin.y = floorf (glyph_origin.y * align_scale_y + 0.5f);
flags = (((int) glyph_origin.x & 3) | (((int) glyph_origin.y & 3) << 2)) & flags_mask;
glyph_origin.x *= inv_align_scale_x;
glyph_origin.y *= inv_align_scale_y;
image = gsk_gpu_device_lookup_glyph_image (device,
self->frame,
font,
glyphs[i].glyph,
flags,
scale,
&glyph_bounds,
&glyph_offset);
glyph_tex_rect = GRAPHENE_RECT_INIT (-glyph_bounds.origin.x * inv_scale,
-glyph_bounds.origin.y * inv_scale,
gsk_gpu_image_get_width (image) * inv_scale,
gsk_gpu_image_get_height (image) * inv_scale);
glyph_bounds = GRAPHENE_RECT_INIT (0,
0,
glyph_bounds.size.width * inv_scale,
glyph_bounds.size.height * inv_scale);
glyph_origin = GRAPHENE_POINT_INIT (glyph_origin.x - glyph_offset.x * inv_scale,
glyph_origin.y - glyph_offset.y * inv_scale);
if (image != last_image)
{
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_DEFAULT);
last_image = image;
}
if (glyphs[i].attr.is_color)
gsk_gpu_texture_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &glyph_offset, &glyph_bounds),
self->desc,
descriptor,
&glyph_bounds,
&glyph_origin,
&glyph_tex_rect);
else
gsk_gpu_colorize_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &glyph_offset, &glyph_bounds),
self->desc,
descriptor,
&glyph_bounds,
&glyph_origin,
&glyph_tex_rect,
&color);
offset.x += glyphs[i].geometry.width * inv_pango_scale;
}
}
static gboolean
gsk_gpu_node_processor_create_glyph_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
GskGpuDevice *device;
const PangoGlyphInfo *glyphs;
PangoFont *font;
guint num_glyphs;
gsize i;
float scale, inv_scale;
guint32 tex_id;
GskGpuImage *last_image;
graphene_point_t offset;
float align_scale_x, align_scale_y;
float inv_align_scale_x, inv_align_scale_y;
unsigned int flags_mask;
const float inv_pango_scale = 1.f / PANGO_SCALE;
if (gsk_text_node_has_color_glyphs (node))
return FALSE;
device = gsk_gpu_frame_get_device (self->frame);
num_glyphs = gsk_text_node_get_num_glyphs (node);
glyphs = gsk_text_node_get_glyphs (node, NULL);
font = gsk_text_node_get_font (node);
offset = *gsk_text_node_get_offset (node);
offset.x += self->offset.x;
offset.y += self->offset.y;
scale = MAX (graphene_vec2_get_x (&self->scale), graphene_vec2_get_y (&self->scale));
inv_scale = 1.f / scale;
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_GLYPHS);
gsk_gpu_pattern_writer_append_rgba (self, gsk_text_node_get_color (node));
gsk_gpu_pattern_writer_append_uint (self, num_glyphs);
if (gsk_font_get_hint_style (font) != CAIRO_HINT_STYLE_NONE)
{
align_scale_x = scale * 4;
align_scale_y = scale;
flags_mask = 3;
}
else
{
align_scale_x = align_scale_y = scale * 4;
flags_mask = 15;
}
inv_align_scale_x = 1 / align_scale_x;
inv_align_scale_y = 1 / align_scale_y;
last_image = NULL;
for (i = 0; i < num_glyphs; i++)
{
GskGpuImage *image;
graphene_rect_t glyph_bounds;
graphene_point_t glyph_offset, glyph_origin;
GskGpuGlyphLookupFlags flags;
glyph_origin = GRAPHENE_POINT_INIT (offset.x + glyphs[i].geometry.x_offset * inv_pango_scale,
offset.y + glyphs[i].geometry.y_offset * inv_pango_scale);
glyph_origin.x = floorf (glyph_origin.x * align_scale_x + 0.5f);
glyph_origin.y = floorf (glyph_origin.y * align_scale_y + 0.5f);
flags = (((int) glyph_origin.x & 3) | (((int) glyph_origin.y & 3) << 2)) & flags_mask;
glyph_origin.x *= inv_align_scale_x;
glyph_origin.y *= inv_align_scale_y;
image = gsk_gpu_device_lookup_glyph_image (device,
self->frame,
font,
glyphs[i].glyph,
flags,
scale,
&glyph_bounds,
&glyph_offset);
if (image != last_image)
{
if (!gsk_gpu_pattern_writer_add_image (self, image, GSK_GPU_SAMPLER_DEFAULT, &tex_id))
return FALSE;
last_image = image;
}
glyph_origin = GRAPHENE_POINT_INIT (glyph_origin.x - glyph_offset.x * inv_scale,
glyph_origin.y - glyph_offset.y * inv_scale);
gsk_gpu_pattern_writer_append_uint (self, tex_id);
gsk_gpu_pattern_writer_append_rect (self,
&GRAPHENE_RECT_INIT (
0,
0,
glyph_bounds.size.width * inv_scale,
glyph_bounds.size.height * inv_scale
),
&glyph_origin);
gsk_gpu_pattern_writer_append_rect (self,
&GRAPHENE_RECT_INIT (
- glyph_bounds.origin.x * inv_scale,
- glyph_bounds.origin.y * inv_scale,
gsk_gpu_image_get_width (image) * inv_scale,
gsk_gpu_image_get_height (image) * inv_scale
),
&glyph_origin);
offset.x += glyphs[i].geometry.width * inv_pango_scale;
}
return TRUE;
}
static gboolean
gsk_gpu_node_processor_create_opacity_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
if (!gsk_gpu_node_processor_create_node_pattern (self, gsk_opacity_node_get_child (node)))
return FALSE;
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_OPACITY);
gsk_gpu_pattern_writer_append_float (self, gsk_opacity_node_get_opacity (node));
return TRUE;
}
static void
gsk_gpu_node_processor_add_color_matrix_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskGpuImage *image;
guint32 descriptor;
GskRenderNode *child;
graphene_matrix_t opacity_matrix;
const graphene_matrix_t *color_matrix;
graphene_rect_t tex_rect;
child = gsk_color_matrix_node_get_child (node);
if (gsk_gpu_node_processor_ubershader_instead_of_offscreen (self, child) &&
gsk_gpu_node_processor_try_node_as_pattern (self, node))
return;
color_matrix = gsk_color_matrix_node_get_color_matrix (node);
if (self->opacity < 1.0f)
{
graphene_matrix_init_from_float (&opacity_matrix,
(float[16]) {
1.0f, 0.0f, 0.0f, 0.0f,
0.0f, 1.0f, 0.0f, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 0.0f, self->opacity
});
graphene_matrix_multiply (&opacity_matrix, color_matrix, &opacity_matrix);
color_matrix = &opacity_matrix;
}
image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
NULL,
child,
&tex_rect);
if (image == NULL)
return;
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_DEFAULT);
gsk_gpu_color_matrix_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
self->desc,
descriptor,
&node->bounds,
&self->offset,
&tex_rect,
color_matrix,
gsk_color_matrix_node_get_color_offset (node));
g_object_unref (image);
}
static gboolean
gsk_gpu_node_processor_create_color_matrix_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
if (!gsk_gpu_node_processor_create_node_pattern (self, gsk_color_matrix_node_get_child (node)))
return FALSE;
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_COLOR_MATRIX);
gsk_gpu_pattern_writer_append_matrix (self, gsk_color_matrix_node_get_color_matrix (node));
gsk_gpu_pattern_writer_append_vec4 (self, gsk_color_matrix_node_get_color_offset (node));
return TRUE;
}
static void
gsk_gpu_node_processor_repeat_tile (GskGpuNodeProcessor *self,
const graphene_rect_t *rect,
float x,
float y,
GskRenderNode *child,
const graphene_rect_t *child_bounds)
{
GskGpuImage *image;
graphene_rect_t clipped_child_bounds, offset_rect;
guint32 descriptor;
gsk_rect_init_offset (&offset_rect,
rect,
- x * child_bounds->size.width,
- y * child_bounds->size.height);
if (!gsk_rect_intersection (&offset_rect, child_bounds, &clipped_child_bounds))
{
/* The math has gone wrong probably, someone should look at this. */
g_warn_if_reached ();
return;
}
GSK_DEBUG (FALLBACK, "Offscreening node '%s' for tiling", g_type_name_from_instance ((GTypeInstance *) child));
image = gsk_gpu_node_processor_create_offscreen (self->frame,
&self->scale,
&clipped_child_bounds,
child);
g_return_if_fail (image);
descriptor = gsk_gpu_node_processor_add_image (self, image, GSK_GPU_SAMPLER_REPEAT);
gsk_gpu_texture_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, rect),
self->desc,
descriptor,
rect,
&self->offset,
&GRAPHENE_RECT_INIT (
clipped_child_bounds.origin.x + x * child_bounds->size.width,
clipped_child_bounds.origin.y + y * child_bounds->size.height,
clipped_child_bounds.size.width,
clipped_child_bounds.size.height
));
g_object_unref (image);
}
static void
gsk_gpu_node_processor_add_repeat_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskRenderNode *child;
const graphene_rect_t *child_bounds;
graphene_rect_t bounds;
float tile_left, tile_right, tile_top, tile_bottom;
child = gsk_repeat_node_get_child (node);
child_bounds = gsk_repeat_node_get_child_bounds (node);
if (gsk_rect_is_empty (child_bounds))
return;
if (gsk_gpu_node_processor_ubershader_instead_of_offscreen (self, child) &&
gsk_gpu_node_processor_repeat_node_can_ubershader (node) &&
gsk_gpu_node_processor_try_node_as_pattern (self, node))
return;
gsk_gpu_node_processor_get_clip_bounds (self, &bounds);
if (!gsk_rect_intersection (&bounds, &node->bounds, &bounds))
return;
tile_left = (bounds.origin.x - child_bounds->origin.x) / child_bounds->size.width;
tile_right = (bounds.origin.x + bounds.size.width - child_bounds->origin.x) / child_bounds->size.width;
tile_top = (bounds.origin.y - child_bounds->origin.y) / child_bounds->size.height;
tile_bottom = (bounds.origin.y + bounds.size.height - child_bounds->origin.y) / child_bounds->size.height;
/* the 1st check tests that a tile fully fits into the bounds,
* the 2nd check is to catch the case where it fits exactly */
if (ceilf (tile_left) < floorf (tile_right) &&
bounds.size.width > child_bounds->size.width)
{
if (ceilf (tile_top) < floorf (tile_bottom) &&
bounds.size.height > child_bounds->size.height)
{
/* tile in both directions */
gsk_gpu_node_processor_repeat_tile (self,
&bounds,
ceilf (tile_left),
ceilf (tile_top),
child,
child_bounds);
}
else
{
/* tile horizontally, repeat vertically */
float y;
for (y = floorf (tile_top); y < ceilf (tile_bottom); y++)
{
float start_y = MAX (bounds.origin.y,
child_bounds->origin.y + y * child_bounds->size.height);
float end_y = MIN (bounds.origin.y + bounds.size.height,
child_bounds->origin.y + (y + 1) * child_bounds->size.height);
gsk_gpu_node_processor_repeat_tile (self,
&GRAPHENE_RECT_INIT (
bounds.origin.x,
start_y,
bounds.size.width,
end_y - start_y
),
ceilf (tile_left),
y,
child,
child_bounds);
}
}
}
else if (ceilf (tile_top) < floorf (tile_bottom) &&
bounds.size.height > child_bounds->size.height)
{
/* repeat horizontally, tile vertically */
float x;
for (x = floorf (tile_left); x < ceilf (tile_right); x++)
{
float start_x = MAX (bounds.origin.x,
child_bounds->origin.x + x * child_bounds->size.width);
float end_x = MIN (bounds.origin.x + bounds.size.width,
child_bounds->origin.x + (x + 1) * child_bounds->size.width);
gsk_gpu_node_processor_repeat_tile (self,
&GRAPHENE_RECT_INIT (
start_x,
bounds.origin.y,
end_x - start_x,
bounds.size.height
),
x,
ceilf (tile_top),
child,
child_bounds);
}
}
else
{
/* repeat in both directions */
graphene_point_t old_offset, offset;
graphene_rect_t clip_bounds;
float x, y;
old_offset = self->offset;
for (x = floorf (tile_left); x < ceilf (tile_right); x++)
{
offset.x = x * child_bounds->size.width;
for (y = floorf (tile_top); y < ceilf (tile_bottom); y++)
{
offset.y = y * child_bounds->size.height;
self->offset = GRAPHENE_POINT_INIT (old_offset.x + offset.x, old_offset.y + offset.y);
clip_bounds = GRAPHENE_RECT_INIT (bounds.origin.x - offset.x,
bounds.origin.y - offset.y,
bounds.size.width,
bounds.size.height);
if (!gsk_rect_intersection (&clip_bounds, child_bounds, &clip_bounds))
continue;
gsk_gpu_node_processor_add_node_clipped (self,
child,
&clip_bounds);
}
}
self->offset = old_offset;
}
}
static gboolean
gsk_gpu_node_processor_create_repeat_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
GskRenderNode *child;
const graphene_rect_t *child_bounds;
graphene_rect_t old_bounds;
child = gsk_repeat_node_get_child (node);
child_bounds = gsk_repeat_node_get_child_bounds (node);
if (gsk_rect_is_empty (child_bounds))
{
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_COLOR);
gsk_gpu_pattern_writer_append_rgba (self, &GDK_RGBA_TRANSPARENT);
return TRUE;
}
if (!gsk_gpu_node_processor_repeat_node_can_ubershader (node))
return FALSE;
if (!gsk_gpu_pattern_writer_push_stack (self))
return FALSE;
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_REPEAT_PUSH);
gsk_gpu_pattern_writer_append_rect (self, child_bounds, &self->offset);
old_bounds = self->bounds;
self->bounds = GRAPHENE_RECT_INIT (child_bounds->origin.x + self->offset.x,
child_bounds->origin.y + self->offset.y,
child_bounds->size.width,
child_bounds->size.height);
if (!gsk_gpu_node_processor_create_node_pattern (self, child))
{
gsk_gpu_pattern_writer_pop_stack (self);
return FALSE;
}
self->bounds = old_bounds;
if (!gsk_rect_contains_rect (&child->bounds, child_bounds))
{
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_CLIP);
gsk_gpu_pattern_writer_append_rect (self, &child->bounds, &self->offset);
}
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_POSITION_POP);
gsk_gpu_pattern_writer_pop_stack (self);
return TRUE;
}
typedef struct _FillData FillData;
struct _FillData
{
GskPath *path;
GdkRGBA color;
GskFillRule fill_rule;
};
static void
gsk_fill_data_free (gpointer data)
{
FillData *fill = data;
gsk_path_unref (fill->path);
g_free (fill);
}
static void
gsk_gpu_node_processor_fill_path (gpointer data,
cairo_t *cr)
{
FillData *fill = data;
switch (fill->fill_rule)
{
case GSK_FILL_RULE_WINDING:
cairo_set_fill_rule (cr, CAIRO_FILL_RULE_WINDING);
break;
case GSK_FILL_RULE_EVEN_ODD:
cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
break;
default:
g_assert_not_reached ();
break;
}
gsk_path_to_cairo (fill->path, cr);
gdk_cairo_set_source_rgba (cr, &fill->color);
cairo_fill (cr);
}
static void
gsk_gpu_node_processor_add_fill_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
graphene_rect_t clip_bounds, source_rect;
GskGpuImage *mask_image, *source_image;
guint32 descriptors[2];
GskRenderNode *child;
if (!gsk_gpu_node_processor_clip_node_bounds (self, node, &clip_bounds))
return;
rect_round_to_pixels (&clip_bounds, &self->scale, &self->offset, &clip_bounds);
child = gsk_fill_node_get_child (node);
mask_image = gsk_gpu_upload_cairo_op (self->frame,
&self->scale,
&clip_bounds,
gsk_gpu_node_processor_fill_path,
g_memdup (&(FillData) {
.path = gsk_path_ref (gsk_fill_node_get_path (node)),
.color = GSK_RENDER_NODE_TYPE (child) == GSK_COLOR_NODE
? *gsk_color_node_get_color (child)
: GDK_RGBA_WHITE,
.fill_rule = gsk_fill_node_get_fill_rule (node)
}, sizeof (FillData)),
(GDestroyNotify) gsk_fill_data_free);
g_return_if_fail (mask_image != NULL);
if (GSK_RENDER_NODE_TYPE (child) == GSK_COLOR_NODE)
{
gsk_gpu_node_processor_image_op (self,
mask_image,
&clip_bounds,
&clip_bounds);
return;
}
source_image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
&clip_bounds,
child,
&source_rect);
if (source_image == NULL)
return;
gsk_gpu_node_processor_add_images (self,
2,
(GskGpuImage *[2]) { source_image, mask_image },
(GskGpuSampler[2]) { GSK_GPU_SAMPLER_DEFAULT, GSK_GPU_SAMPLER_DEFAULT },
descriptors);
gsk_gpu_mask_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &clip_bounds),
self->desc,
&clip_bounds,
&self->offset,
self->opacity,
GSK_MASK_MODE_ALPHA,
descriptors[0],
&source_rect,
descriptors[1],
&clip_bounds);
g_object_unref (source_image);
}
typedef struct _StrokeData StrokeData;
struct _StrokeData
{
GskPath *path;
GdkRGBA color;
GskStroke stroke;
};
static void
gsk_stroke_data_free (gpointer data)
{
StrokeData *stroke = data;
gsk_path_unref (stroke->path);
gsk_stroke_clear (&stroke->stroke);
g_free (stroke);
}
static void
gsk_gpu_node_processor_stroke_path (gpointer data,
cairo_t *cr)
{
StrokeData *stroke = data;
gsk_stroke_to_cairo (&stroke->stroke, cr);
gsk_path_to_cairo (stroke->path, cr);
gdk_cairo_set_source_rgba (cr, &stroke->color);
cairo_stroke (cr);
}
static void
gsk_gpu_node_processor_add_stroke_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
graphene_rect_t clip_bounds, source_rect;
GskGpuImage *mask_image, *source_image;
guint32 descriptors[2];
GskRenderNode *child;
if (!gsk_gpu_node_processor_clip_node_bounds (self, node, &clip_bounds))
return;
rect_round_to_pixels (&clip_bounds, &self->scale, &self->offset, &clip_bounds);
child = gsk_stroke_node_get_child (node);
mask_image = gsk_gpu_upload_cairo_op (self->frame,
&self->scale,
&clip_bounds,
gsk_gpu_node_processor_stroke_path,
g_memdup (&(StrokeData) {
.path = gsk_path_ref (gsk_stroke_node_get_path (node)),
.color = GSK_RENDER_NODE_TYPE (child) == GSK_COLOR_NODE
? *gsk_color_node_get_color (child)
: GDK_RGBA_WHITE,
.stroke = GSK_STROKE_INIT_COPY (gsk_stroke_node_get_stroke (node))
}, sizeof (StrokeData)),
(GDestroyNotify) gsk_stroke_data_free);
g_return_if_fail (mask_image != NULL);
if (GSK_RENDER_NODE_TYPE (child) == GSK_COLOR_NODE)
{
gsk_gpu_node_processor_image_op (self,
mask_image,
&clip_bounds,
&clip_bounds);
return;
}
source_image = gsk_gpu_node_processor_get_node_as_image (self,
0,
GSK_GPU_IMAGE_STRAIGHT_ALPHA,
&clip_bounds,
child,
&source_rect);
if (source_image == NULL)
return;
gsk_gpu_node_processor_add_images (self,
2,
(GskGpuImage *[2]) { source_image, mask_image },
(GskGpuSampler[2]) { GSK_GPU_SAMPLER_DEFAULT, GSK_GPU_SAMPLER_DEFAULT },
descriptors);
gsk_gpu_mask_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &clip_bounds),
self->desc,
&clip_bounds,
&self->offset,
self->opacity,
GSK_MASK_MODE_ALPHA,
descriptors[0],
&source_rect,
descriptors[1],
&clip_bounds);
g_object_unref (source_image);
}
static void
gsk_gpu_node_processor_add_subsurface_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GdkSubsurface *subsurface;
subsurface = gsk_subsurface_node_get_subsurface (node);
if (subsurface == NULL ||
gdk_subsurface_get_texture (subsurface) == NULL ||
gdk_subsurface_get_parent (subsurface) != gdk_draw_context_get_surface (gsk_gpu_frame_get_context (self->frame)))
{
gsk_gpu_node_processor_add_node (self, gsk_subsurface_node_get_child (node));
return;
}
if (!gdk_subsurface_is_above_parent (subsurface))
{
cairo_rectangle_int_t int_clipped;
graphene_rect_t rect, clipped;
graphene_rect_offset_r (&node->bounds,
self->offset.x, self->offset.y,
&rect);
gsk_rect_intersection (&self->clip.rect.bounds, &rect, &clipped);
if (gsk_gpu_frame_should_optimize (self->frame, GSK_GPU_OPTIMIZE_CLEAR) &&
node->bounds.size.width * node->bounds.size.height > 100 * 100 && /* not worth the effort for small images */
(self->clip.type != GSK_GPU_CLIP_ROUNDED ||
gsk_gpu_clip_contains_rect (&self->clip, &GRAPHENE_POINT_INIT(0,0), &clipped)) &&
gsk_gpu_node_processor_rect_is_integer (self, &clipped, &int_clipped))
{
if (gdk_rectangle_intersect (&int_clipped, &self->scissor, &int_clipped))
{
gsk_gpu_clear_op (self->frame,
&int_clipped,
&GDK_RGBA_TRANSPARENT);
}
}
else
{
self->blend = GSK_GPU_BLEND_CLEAR;
self->pending_globals |= GSK_GPU_GLOBAL_BLEND;
gsk_gpu_node_processor_sync_globals (self, 0);
gsk_gpu_color_op (self->frame,
gsk_gpu_clip_get_shader_clip (&self->clip, &self->offset, &node->bounds),
&node->bounds,
&self->offset,
&GDK_RGBA_WHITE);
self->blend = GSK_GPU_BLEND_OVER;
self->pending_globals |= GSK_GPU_GLOBAL_BLEND;
}
}
}
static gboolean
gsk_gpu_node_processor_create_subsurface_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
/* This can only ever happen if no offloading is happening */
g_assert (gsk_subsurface_node_get_subsurface (node) == NULL ||
gdk_subsurface_get_texture (gsk_subsurface_node_get_subsurface (node)) == NULL);
return gsk_gpu_node_processor_create_node_pattern (self, gsk_subsurface_node_get_child (node));
}
static void
gsk_gpu_node_processor_add_container_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
if (self->opacity < 1.0 && !gsk_container_node_is_disjoint (node))
{
gsk_gpu_node_processor_add_without_opacity (self, node);
return;
}
for (guint i = 0; i < gsk_container_node_get_n_children (node); i++)
gsk_gpu_node_processor_add_node (self, gsk_container_node_get_child (node, i));
}
static gboolean
gsk_gpu_node_processor_create_debug_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
return gsk_gpu_node_processor_create_node_pattern (self, gsk_debug_node_get_child (node));
}
static void
gsk_gpu_node_processor_add_debug_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
gsk_gpu_node_processor_add_node (self, gsk_debug_node_get_child (node));
}
typedef enum {
GSK_GPU_HANDLE_OPACITY = (1 << 0)
} GskGpuNodeFeatures;
static const struct
{
GskGpuGlobals ignored_globals;
GskGpuNodeFeatures features;
void (* process_node) (GskGpuNodeProcessor *self,
GskRenderNode *node);
gboolean (* create_pattern) (GskGpuPatternWriter *self,
GskRenderNode *node);
} nodes_vtable[] = {
[GSK_NOT_A_RENDER_NODE] = {
0,
0,
NULL,
NULL,
},
[GSK_CONTAINER_NODE] = {
GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP | GSK_GPU_GLOBAL_SCISSOR,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_container_node,
NULL,
},
[GSK_CAIRO_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
NULL,
NULL,
},
[GSK_COLOR_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_color_node,
gsk_gpu_node_processor_create_color_pattern,
},
[GSK_LINEAR_GRADIENT_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_linear_gradient_node,
gsk_gpu_node_processor_create_linear_gradient_pattern,
},
[GSK_REPEATING_LINEAR_GRADIENT_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_linear_gradient_node,
gsk_gpu_node_processor_create_linear_gradient_pattern,
},
[GSK_RADIAL_GRADIENT_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_radial_gradient_node,
gsk_gpu_node_processor_create_radial_gradient_pattern,
},
[GSK_REPEATING_RADIAL_GRADIENT_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_radial_gradient_node,
gsk_gpu_node_processor_create_radial_gradient_pattern,
},
[GSK_CONIC_GRADIENT_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_conic_gradient_node,
gsk_gpu_node_processor_create_conic_gradient_pattern,
},
[GSK_BORDER_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_border_node,
NULL,
},
[GSK_TEXTURE_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_texture_node,
gsk_gpu_node_processor_create_texture_pattern,
},
[GSK_INSET_SHADOW_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_inset_shadow_node,
NULL,
},
[GSK_OUTSET_SHADOW_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_outset_shadow_node,
NULL,
},
[GSK_TRANSFORM_NODE] = {
GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP | GSK_GPU_GLOBAL_SCISSOR | GSK_GPU_GLOBAL_BLEND,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_transform_node,
gsk_gpu_node_processor_create_transform_pattern,
},
[GSK_OPACITY_NODE] = {
GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP | GSK_GPU_GLOBAL_SCISSOR,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_opacity_node,
gsk_gpu_node_processor_create_opacity_pattern,
},
[GSK_COLOR_MATRIX_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_color_matrix_node,
gsk_gpu_node_processor_create_color_matrix_pattern
},
[GSK_REPEAT_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_repeat_node,
gsk_gpu_node_processor_create_repeat_pattern
},
[GSK_CLIP_NODE] = {
GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP | GSK_GPU_GLOBAL_SCISSOR | GSK_GPU_GLOBAL_BLEND,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_clip_node,
gsk_gpu_node_processor_create_clip_pattern,
},
[GSK_ROUNDED_CLIP_NODE] = {
GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP | GSK_GPU_GLOBAL_SCISSOR | GSK_GPU_GLOBAL_BLEND,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_rounded_clip_node,
NULL,
},
[GSK_SHADOW_NODE] = {
0,
0,
gsk_gpu_node_processor_add_shadow_node,
NULL,
},
[GSK_BLEND_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_blend_node,
gsk_gpu_node_processor_create_blend_pattern,
},
[GSK_CROSS_FADE_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_cross_fade_node,
gsk_gpu_node_processor_create_cross_fade_pattern,
},
[GSK_TEXT_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_glyph_node,
gsk_gpu_node_processor_create_glyph_pattern,
},
[GSK_BLUR_NODE] = {
0,
0,
gsk_gpu_node_processor_add_blur_node,
NULL,
},
[GSK_DEBUG_NODE] = {
GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP | GSK_GPU_GLOBAL_SCISSOR | GSK_GPU_GLOBAL_BLEND,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_debug_node,
gsk_gpu_node_processor_create_debug_pattern,
},
[GSK_GL_SHADER_NODE] = {
0,
0,
NULL,
NULL,
},
[GSK_TEXTURE_SCALE_NODE] = {
0,
0,
gsk_gpu_node_processor_add_texture_scale_node,
NULL,
},
[GSK_MASK_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_mask_node,
gsk_gpu_node_processor_create_mask_pattern,
},
[GSK_FILL_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_fill_node,
NULL,
},
[GSK_STROKE_NODE] = {
0,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_stroke_node,
NULL,
},
[GSK_SUBSURFACE_NODE] = {
GSK_GPU_GLOBAL_MATRIX | GSK_GPU_GLOBAL_SCALE | GSK_GPU_GLOBAL_CLIP | GSK_GPU_GLOBAL_SCISSOR | GSK_GPU_GLOBAL_BLEND,
GSK_GPU_HANDLE_OPACITY,
gsk_gpu_node_processor_add_subsurface_node,
gsk_gpu_node_processor_create_subsurface_pattern,
},
};
static void
gsk_gpu_node_processor_add_node (GskGpuNodeProcessor *self,
GskRenderNode *node)
{
GskRenderNodeType node_type;
/* This catches the corner cases of empty nodes, so after this check
* there's quaranteed to be at least 1 pixel that needs to be drawn
*/
if (node->bounds.size.width == 0 || node->bounds.size.height == 0)
return;
if (!gsk_gpu_clip_may_intersect_rect (&self->clip, &self->offset, &node->bounds))
return;
node_type = gsk_render_node_get_node_type (node);
if (node_type >= G_N_ELEMENTS (nodes_vtable))
{
g_critical ("unknown node type %u for %s", node_type, g_type_name_from_instance ((GTypeInstance *) node));
gsk_gpu_node_processor_add_fallback_node (self, node);
return;
}
if (self->opacity < 1.0 && (nodes_vtable[node_type].features & GSK_GPU_HANDLE_OPACITY) == 0)
{
gsk_gpu_node_processor_add_without_opacity (self, node);
return;
}
gsk_gpu_node_processor_sync_globals (self, nodes_vtable[node_type].ignored_globals);
g_assert ((self->pending_globals & ~nodes_vtable[node_type].ignored_globals) == 0);
if (nodes_vtable[node_type].process_node)
{
nodes_vtable[node_type].process_node (self, node);
}
else
{
GSK_DEBUG (FALLBACK, "Unsupported node '%s'",
g_type_name_from_instance ((GTypeInstance *) node));
gsk_gpu_node_processor_add_fallback_node (self, node);
}
}
static gboolean
gsk_gpu_node_processor_create_node_pattern (GskGpuPatternWriter *self,
GskRenderNode *node)
{
GskRenderNodeType node_type;
graphene_rect_t bounds;
GskGpuImage *image;
guint32 tex_id;
if (!gsk_gpu_frame_should_optimize (self->frame, GSK_GPU_OPTIMIZE_UBER))
return FALSE;
/* This catches the corner cases of empty nodes, so after this check
* there's quaranteed to be at least 1 pixel that needs to be drawn
*/
if (node->bounds.size.width == 0 || node->bounds.size.height == 0)
return TRUE;
node_type = gsk_render_node_get_node_type (node);
if (node_type >= G_N_ELEMENTS (nodes_vtable))
{
g_critical ("unknown node type %u for %s", node_type, g_type_name_from_instance ((GTypeInstance *) node));
return FALSE;
}
if (nodes_vtable[node_type].create_pattern != NULL)
{
gsize size_before = pattern_buffer_get_size (&self->buffer);
gsize images_before = self->desc ? gsk_gpu_descriptors_get_n_images (self->desc) : 0;
gsize buffers_before = self->desc ? gsk_gpu_descriptors_get_n_buffers (self->desc) : 0;
if (nodes_vtable[node_type].create_pattern (self, node))
return TRUE;
pattern_buffer_set_size (&self->buffer, size_before);
if (self->desc)
gsk_gpu_descriptors_set_size (self->desc, images_before, buffers_before);
}
rect_round_to_pixels (&GRAPHENE_RECT_INIT (
self->bounds.origin.x - self->offset.x,
self->bounds.origin.y - self->offset.y,
self->bounds.size.width,
self->bounds.size.height
),
&self->scale,
&self->offset,
&bounds);
image = gsk_gpu_get_node_as_image (self->frame,
&bounds,
&self->scale,
node,
&bounds);
if (image == NULL)
{
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_COLOR);
gsk_gpu_pattern_writer_append_rgba (self, &GDK_RGBA_TRANSPARENT);
return TRUE;
}
if (!gsk_gpu_pattern_writer_add_image (self, image, GSK_GPU_SAMPLER_DEFAULT, &tex_id))
{
g_object_unref (image);
return FALSE;
}
if (gsk_gpu_image_get_flags (image) & GSK_GPU_IMAGE_STRAIGHT_ALPHA)
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_STRAIGHT_ALPHA);
else
gsk_gpu_pattern_writer_append_uint (self, GSK_GPU_PATTERN_TEXTURE);
gsk_gpu_pattern_writer_append_uint (self, tex_id);
gsk_gpu_pattern_writer_append_rect (self, &bounds, &self->offset);
g_object_unref (image);
return TRUE;
}
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